I do still need help, but I have gotten a bit further with my problem. A few moments ago, I tried to open up Microsoft Word, and I got the same error message that I have been getting when I try to open HJT (Error: Application Not Found). I realized that the problem isn't only with HJT so I did this:
I went to dougknox.com
In the left hand column, clicked WinXP fixes
Then in the list that came up, clicked File Association Fixes
Then in the next list, clicked EXE File Association Fix.
This allows me to open programs including HJT. Here is the log file:
Logfile of Trend Micro HijackThis v2.0.3 (BETA)
Scan saved at 11:44:48 PM, on 4/20/2010
Platform: Windows XP SP3 (WinNT 5.01.2600)
MSIE: Internet Explorer v8.00 (8.00.6001.18702)
Boot mode: Normal
Running processes:
C:\WINDOWS\System32\smss.exe
C:\WINDOWS\system32\winlogon.exe
C:\WINDOWS\system32\services.exe
C:\WINDOWS\system32\lsass.exe
C:\WINDOWS\system32\svchost.exe
C:\WINDOWS\System32\svchost.exe
C:\Program Files\AVG\AVG9\avgchsvx.exe
C:\Program Files\AVG\AVG9\avgrsx.exe
C:\Program Files\AVG\AVG9\avgcsrvx.exe
C:\Program Files\Common Files\Apple\Mobile Device Support\bin\AppleMobileDeviceService.exe
C:\Program Files\AVG\AVG9\avgwdsvc.exe
C:\Program Files\Bonjour\mDNSResponder.exe
C:\Program Files\Common Files\Intuit\Update Service\IntuitUpdateService.exe
C:\Program Files\Java\jre6\bin\jqs.exe
C:\WINDOWS\system32\svchost.exe
C:\WINDOWS\system32\svchost.exe
C:\Program Files\Yahoo!\SoftwareUpdate\YahooAUService.exe
C:\Program Files\AVG\AVG9\avgemc.exe
C:\Program Files\AVG\AVG9\avgcsrvx.exe
C:\WINDOWS\Explorer.EXE
C:\WINDOWS\system32\ctfmon.exe
C:\Program Files\Common Files\Adobe\Updater5\AdobeUpdater.exe
C:\WINDOWS\system32\spoolsv.exe
C:\Program Files\Trend Micro\HijackThis\TrendMicro\HiJackThis\HiJackThis.exe
C:\Program Files\Internet Explorer\iexplore.exe
C:\Program Files\Internet Explorer\iexplore.exe
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page =
http://www.yahoo.com/
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL =
http://go.microsoft.com/fwlink/?LinkId=69157
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Search_URL =
http://go.microsoft.com/fwlink/?LinkId=54896
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Search Page =
http://go.microsoft.com/fwlink/?LinkId=54896
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Start Page =
http://go.microsoft.com/fwlink/?LinkId=69157
R1 - HKCU\Software\Microsoft\Internet Explorer\SearchURL,(Default) =
http://search.yahoo.com/search?fr=mcafee&p=%s
R1 - HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings,ProxyOverride = *.local
R3 - URLSearchHook: Yahoo! Toolbar - {EF99BD32-C1FB-11D2-892F-0090271D4F88} - C:\Program Files\Yahoo!\Companion\Installs\cpn3\yt.dll
O1 - Hosts: 64.86.16.97 google.ae
O1 - Hosts: 64.86.16.97 google.as
O1 - Hosts: 64.86.16.97 google.at
O1 - Hosts: 64.86.16.97 google.az
O1 - Hosts: 64.86.16.97 google.ba
O1 - Hosts: 64.86.16.97 google.be
O1 - Hosts: 64.86.16.97 google.bg
O1 - Hosts: 64.86.16.97 google.bs
O1 - Hosts: 64.86.16.97 google.ca
O1 - Hosts: 64.86.16.97 google.cd
O1 - Hosts: 64.86.16.97 google.com.gh
O1 - Hosts: 64.86.16.97 google.com.hk
O1 - Hosts: 64.86.16.97 google.com.jm
O1 - Hosts: 64.86.16.97 google.com.mx
O1 - Hosts: 64.86.16.97 google.com.my
O1 - Hosts: 64.86.16.97 google.com.na
O1 - Hosts: 64.86.16.97 google.com.nf
O1 - Hosts: 64.86.16.97 google.com.ng
O1 - Hosts: 64.86.16.97 google.ch
O1 - Hosts: 64.86.16.97 google.com.np
O1 - Hosts: 64.86.16.97 google.com.pr
O1 - Hosts: 64.86.16.97 google.com.qa
O1 - Hosts: 64.86.16.97 google.com.sg
O1 - Hosts: 64.86.16.97 google.com.tj
O1 - Hosts: 64.86.16.97 google.com.tw
O1 - Hosts: 64.86.16.97 google.dj
O1 - Hosts: 64.86.16.97 google.de
O1 - Hosts: 64.86.16.97 google.dk
O1 - Hosts: 64.86.16.97 google.dm
O1 - Hosts: 64.86.16.97 google.ee
O1 - Hosts: 64.86.16.97 google.fi
O1 - Hosts: 64.86.16.97 google.fm
O1 - Hosts: 64.86.16.97 google.fr
O1 - Hosts: 64.86.16.97 google.ge
O1 - Hosts: 64.86.16.97 google.gg
O1 - Hosts: 64.86.16.97 google.gm
O1 - Hosts: 64.86.16.97 google.gr
O1 - Hosts: 64.86.16.97 google.ht
O1 - Hosts: 64.86.16.97 google.ie
O1 - Hosts: 64.86.16.97 google.im
O1 - Hosts: 64.86.16.97 google.in
O1 - Hosts: 64.86.16.97 google.it
O1 - Hosts: 64.86.16.97 google.ki
O1 - Hosts: 64.86.16.97 google.la
O1 - Hosts: 64.86.16.97 google.li
O1 - Hosts: 64.86.16.97 google.lv
O1 - Hosts: 64.86.16.97 google.ma
O1 - Hosts: 64.86.16.97 google.ms
O1 - Hosts: 64.86.16.97 google.mu
O1 - Hosts: 64.86.16.97 google.mw
O1 - Hosts: 64.86.16.97 google.nl
O1 - Hosts: 64.86.16.97 google.no
O1 - Hosts: 64.86.16.97 google.nr
O1 - Hosts: 64.86.16.97 google.nu
O1 - Hosts: 64.86.16.97 google.pl
O1 - Hosts: 64.86.16.97 google.pn
O1 - Hosts: 64.86.16.97 google.pt
O1 - Hosts: 64.86.16.97 google.ro
O1 - Hosts: 64.86.16.97 google.ru
O1 - Hosts: 64.86.16.97 google.rw
O1 - Hosts: 64.86.16.97 google.sc
O1 - Hosts: 64.86.16.97 google.se
O1 - Hosts: 64.86.16.97 google.sh
O1 - Hosts: 64.86.16.97 google.si
O1 - Hosts: 64.86.16.97 google.sm
O1 - Hosts: 64.86.16.97 google.sn
O1 - Hosts: 64.86.16.97 google.st
O1 - Hosts: 64.86.16.97 google.tl
O1 - Hosts: 64.86.16.97 google.tm
O1 - Hosts: 64.86.16.97 google.tt
O1 - Hosts: 64.86.16.97 google.us
O1 - Hosts: 64.86.16.97 google.vu
O1 - Hosts: 64.86.16.97 google.ws
O1 - Hosts: 64.86.16.97 google.co.ck
O1 - Hosts: 64.86.16.97 google.co.id
O1 - Hosts: 64.86.16.97 google.co.il
O1 - Hosts: 64.86.16.97 google.co.in
O1 - Hosts: 64.86.16.97 google.co.jp
O1 - Hosts: 64.86.16.97 google.co.kr
O1 - Hosts: 64.86.16.97 google.co.ls
O1 - Hosts: 64.86.16.97 google.co.ma
O1 - Hosts: 64.86.16.97 google.co.nz
O1 - Hosts: 64.86.16.97 google.co.tz
O1 - Hosts: 64.86.16.97 google.co.ug
O1 - Hosts: 64.86.16.97 google.co.uk
O1 - Hosts: 64.86.16.97 google.co.za
O1 - Hosts: 64.86.16.97 google.co.zm
O1 - Hosts: 64.86.16.97 google.com
O1 - Hosts: 64.86.16.97 google.com.af
O1 - Hosts: 64.86.16.97 google.com.ag
O1 - Hosts: 64.86.16.97 google.com.ar
O1 - Hosts: 64.86.16.97 google.com.au
O1 - Hosts: 64.86.16.97 google.com.bn
O1 - Hosts: 64.86.16.97 google.com.br
O1 - Hosts: 64.86.16.97 google.com.by
O1 - Hosts: 64.86.16.97 google.com.bz
O1 - Hosts: 64.86.16.97 google.com.cu
O1 - Hosts: 64.86.16.97 google.com.ec
O1 - Hosts: 64.86.16.97 google.com.fj
O1 - Hosts: 64.86.16.97
www.google.ae
O1 - Hosts: 64.86.16.97
www.google.as
O2 - BHO: &Yahoo! Toolbar Helper - {02478D38-C3F9-4EFB-9B51-7695ECA05670} - C:\Program Files\Yahoo!\Companion\Installs\cpn3\yt.dll
O2 - BHO: Adobe PDF Reader Link Helper - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\Program Files\Common Files\Adobe\Acrobat\ActiveX\AcroIEHelper.dll
O2 - BHO: Java(tm) Plug-In SSV Helper - {761497BB-D6F0-462C-B6EB-D4DAF1D92D43} - C:\Program Files\Java\jre6\bin\ssv.dll
O2 - BHO: Java(tm) Plug-In 2 SSV Helper - {DBC80044-A445-435b-BC74-9C25C1C588A9} - C:\Program Files\Java\jre6\bin\jp2ssv.dll
O2 - BHO: JQSIEStartDetectorImpl - {E7E6F031-17CE-4C07-BC86-EABFE594F69C} - C:\Program Files\Java\jre6\lib\deploy\jqs\ie\jqs_plugin.dll
O2 - BHO: SingleInstance Class - {FDAD4DA1-61A2-4FD8-9C17-86F7AC245081} - C:\Program Files\Yahoo!\Companion\Installs\cpn3\YTSingleInstance.dll
O3 - Toolbar: Yahoo! Toolbar - {EF99BD32-C1FB-11D2-892F-0090271D4F88} - C:\Program Files\Yahoo!\Companion\Installs\cpn3\yt.dll
O4 - HKLM\..\Run: [IgfxTray] C:\WINDOWS\system32\igfxtray.exe
O4 - HKLM\..\Run: [HotKeysCmds] C:\WINDOWS\system32\hkcmd.exe
O4 - HKLM\..\Run: [AGRSMMSG] AGRSMMSG.exe
O4 - HKLM\..\Run: [HP Software Update] "C:\Program Files\HP\HP Software Update\HPWuSchd.exe"
O4 - HKLM\..\Run: [HP Component Manager] "C:\Program Files\HP\hpcoretech\hpcmpmgr.exe"
O4 - HKLM\..\Run: [SunJavaUpdateSched] "C:\Program Files\Java\jre6\bin\jusched.exe"
O4 - HKLM\..\Run: [Adobe Reader Speed Launcher] "C:\Program Files\Adobe\Reader 8.0\Reader\Reader_sl.exe"
O4 - HKLM\..\Run: [Malwarebytes Anti-Malware (reboot)] "C:\Program Files\Malwarebytes' Anti-Malware\mbam.exe" /runcleanupscript
O4 - HKLM\..\Run: [AVG9_TRAY] C:\PROGRA~1\AVG\AVG9\avgtray.exe
O4 - HKLM\..\Run: [AppleSyncNotifier] C:\Program Files\Common Files\Apple\Mobile Device Support\bin\AppleSyncNotifier.exe
O4 - HKLM\..\Run: [QuickTime Task] "C:\Program Files\QuickTime\qttask.exe" -atboottime
O4 - HKLM\..\Run: [iTunesHelper] "C:\Program Files\iTunes\iTunesHelper.exe"
O4 - HKLM\..\Run: [UserFaultCheck] %systemroot%\system32\dumprep 0 -u
O4 - HKCU\..\Run: [ctfmon.exe] C:\WINDOWS\system32\ctfmon.exe
O4 - HKCU\..\Run: [SUPERAntiSpyware] C:\Program Files\SUPERAntiSpyware\SUPERAntiSpyware.exe
O4 - HKCU\..\Run: [Walgreens PhotoShow Media Manager] C:\PROGRA~1\WALGRE~1\WALGRE~1\data\xtras\mssysmgr.exe
O4 - HKCU\..\Run: [Messenger (Yahoo!)] "C:\PROGRA~1\Yahoo!\Messenger\YahooMessenger.exe" -quiet
O4 - HKCU\..\RunOnce: [FlashPlayerUpdate] C:\WINDOWS\system32\Macromed\Flash\FlashUtil10d.exe
O8 - Extra context menu item: Add to Google Photos Screensa&ver - res://C:\WINDOWS\system32\GPhotos.scr/200
O9 - Extra button: Rip YouTube File - {38E51477-DDB4-4aed-9D61-D0C193E10749} - C:\Program Files\AllMusicConverter\YouTubeRipper.dll
O9 - Extra 'Tools' menuitem: Rip YouTube file embedded in this page - {38E51477-DDB4-4aed-9D61-D0C193E10749} - C:\Program Files\AllMusicConverter\YouTubeRipper.dll
O9 - Extra button: (no name) - {e2e2dd38-d088-4134-82b7-f2ba38496583} - C:\WINDOWS\Network Diagnostic\xpnetdiag.exe
O9 - Extra 'Tools' menuitem: @xpsp3res.dll,-20001 - {e2e2dd38-d088-4134-82b7-f2ba38496583} - C:\WINDOWS\Network Diagnostic\xpnetdiag.exe
O9 - Extra button: Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\Program Files\Messenger\msmsgs.exe
O9 - Extra 'Tools' menuitem: Windows Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\Program Files\Messenger\msmsgs.exe
O16 - DPF: {01016526-5E80-11D8-9E86-0007E96C65AE} (SmartAccess Ctl Class) -
https://install.charter.com/diskless/bin/ssctlsma.dll
O16 - DPF: {18C3FD15-74F6-4280-9C98-3590C966B7B8} (SkillGam Control) -
http://www.worldwinner.com/games/v47/skillgam/skillgam.cab
O16 - DPF: {48DD0448-9209-4F81-9F6D-D83562940134} (MySpace Uploader Control) -
http://lads.myspace.com/upload/MySpaceUploader1006.cab
O16 - DPF: {5ED80217-570B-4DA9-BF44-BE107C0EC166} (Windows Live Safety Center Base Module) -
http://cdn.scan.onecare.live.com/resource/download/scanner/wlscbase8942.cab
O16 - DPF: {6414512B-B978-451D-A0D8-FCFDF33E833C} (WUWebControl Class) -
http://update.microsoft.com/windowsupdate/v6/V5Controls/en/x86/client/wuweb_site.cab?1171474653031
O16 - DPF: {8A94C905-FF9D-43B6-8708-F0F22D22B1CB} (Wwlaunch Control) -
http://www.worldwinner.com/games/shared/wwlaunch.cab
O16 - DPF: {A52FBD2B-7AB3-4F6B-90E3-91C772C5D00F} (WoF Control) -
http://www.worldwinner.com/games/v57/wof/wof.cab
O16 - DPF: {CF969D51-F764-4FBF-9E90-475248601C8A} (FamilyFeud Control) -
http://www.worldwinner.com/games/v47/familyfeud/familyfeud.cab
O20 - Winlogon Notify: !SASWinLogon - C:\Program Files\SUPERAntiSpyware\SASWINLO.dll
O20 - Winlogon Notify: avgrsstarter - avgrsstx.dll (file missing)
O22 - SharedTaskScheduler: Browseui preloader - {438755C2-A8BA-11D1-B96B-00A0C90312E1} - C:\WINDOWS\system32\browseui.dll
O22 - SharedTaskScheduler: Component Categories cache daemon - {8C7461EF-2B13-11d2-BE35-3078302C2030} - C:\WINDOWS\system32\browseui.dll
O23 - Service: Apple Mobile Device - Apple Inc. - C:\Program Files\Common Files\Apple\Mobile Device Support\bin\AppleMobileDeviceService.exe
O23 - Service: AVG Free E-mail Scanner (avg9emc) - AVG Technologies CZ, s.r.o. - C:\Program Files\AVG\AVG9\avgemc.exe
O23 - Service: AVG Free WatchDog (avg9wd) - AVG Technologies CZ, s.r.o. - C:\Program Files\AVG\AVG9\avgwdsvc.exe
O23 - Service: Bonjour Service - Apple Inc. - C:\Program Files\Bonjour\mDNSResponder.exe
O23 - Service: Google Software Updater (gusvc) - Google - C:\Program Files\Google\Common\Google Updater\GoogleUpdaterService.exe
O23 - Service: Intuit Update Service (IntuitUpdateService) - Intuit Inc. - C:\Program Files\Common Files\Intuit\Update Service\IntuitUpdateService.exe
O23 - Service: iPod Service - Apple Inc. - C:\Program Files\iPod\bin\iPodService.exe
O23 - Service: Java Quick Starter (JavaQuickStarterService) - Sun Microsystems, Inc. - C:\Program Files\Java\jre6\bin\jqs.exe
O23 - Service: McAfee SiteAdvisor Service - Unknown owner - C:\Program Files\McAfee\SiteAdvisor\McSACore.exe (file missing)
O23 - Service: McAfee Network Agent (McNASvc) - Unknown owner - c:\program files\common files\mcafee\mna\mcnasvc.exe (file missing)
O23 - Service: McAfee Real-time Scanner (McShield) - Unknown owner - C:\PROGRA~1\McAfee\VIRUSS~1\mcshield.exe (file missing)
O23 - Service: McAfee SystemGuards (McSysmon) - Unknown owner - C:\PROGRA~1\McAfee\VIRUSS~1\mcsysmon.exe (file missing)
O23 - Service: McAfee Personal Firewall Service (MpfService) - Unknown owner - C:\Program Files\McAfee\MPF\MPFSrv.exe (file missing)
O23 - Service: Pml Driver HPZ12 - HP - C:\WINDOWS\system32\HPZipm12.exe
O23 - Service: SMServer - SMServer - C:\WINDOWS\system32\snmvtsvc.exe
O23 - Service: Yahoo! Updater (YahooAUService) - Yahoo! Inc. - C:\Program Files\Yahoo!\SoftwareUpdate\YahooAUService.exe
--
End of file - 12763 bytes