I've installed all the XP updates plus AVG NE and Spybot. You sadi you might have some final suggestions, which will be welcome. Here's the log:
Logfile of Trend Micro HijackThis v2.0.2
Scan saved at 4:38:11 PM, on 3/17/2009
Platform: Windows XP SP2 (WinNT 5.01.2600)
MSIE: Internet Explorer v6.00 SP2 (6.00.2900.2180)
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:\WINDOWS\system32\spoolsv.exe
C:\WINDOWS\Explorer.EXE
C:\Program Files\CyberLink\PowerDVD\PDVDServ.exe
C:\WINDOWS\SOUNDMAN.EXE
C:\WINDOWS\system32\RUNDLL32.EXE
C:\WINDOWS\system32\nvsvc32.exe
C:\Program Files\Common Files\New Boundary\PrismXL\PRISMXL.SYS
C:\WINDOWS\system32\svchost.exe
C:\Program Files\Spybot - Search & Destroy\TeaTimer.exe
C:\PROGRA~1\AVG\AVG8\avgwdsvc.exe
C:\PROGRA~1\AVG\AVG8\avgrsx.exe
C:\PROGRA~1\AVG\AVG8\avgnsx.exe
C:\PROGRA~1\AVG\AVG8\avgemc.exe
C:\Program Files\AVG\AVG8\avgcsrvx.exe
C:\Program Files\AVG\AVG8\avgtray.exe
F:\HijackThis\HiJackThis.exe
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Bar = http://www.gateway.com/g/sidepanel.h...ys=DTP&M=T3124
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.gateway.com/g/startpage.h...ys=DTP&M=T3124
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = http://www.gateway.com/g/startpage.h...ys=DTP&M=T3124
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.gateway.com/g/startpage.h...ys=DTP&M=T3124
R0 - HKLM\Software\Microsoft\Internet Explorer\Search,SearchAssistant = http://www.gateway.com/g/sidepanel.h...ys=DTP&M=T3124
R1 - HKCU\Software\Microsoft\Internet Connection Wizard,ShellNext = http://windowsupdate.microsoft.com/
O2 - BHO: AcroIEHlprObj Class - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\Program Files\Adobe\Acrobat 7.0\ActiveX\AcroIEHelper.dll
O2 - BHO: WormRadar.com IESiteBlocker.NavFilter - {3CA2F312-6F6E-4B53-A66E-4E65E497C8C0} - C:\Program Files\AVG\AVG8\avgssie.dll
O2 - BHO: Spybot-S&D IE Protection - {53707962-6F74-2D53-2644-206D7942484F} - C:\PROGRA~1\SPYBOT~1\SDHelper.dll
O2 - BHO: Browser Address Error Redirector - {CA6319C0-31B7-401E-A518-A07C3DB8F777} - c:\windows\system32\BAE.dll
O4 - HKLM\..\Run: [RemoteControl] "C:\Program Files\CyberLink\PowerDVD\PDVDServ.exe"
O4 - HKLM\..\Run: [SoundMan] SOUNDMAN.EXE
O4 - HKLM\..\Run: [NvCplDaemon] RUNDLL32.EXE C:\WINDOWS\system32\NvCpl.dll,NvStartup
O4 - HKLM\..\Run: [nwiz] nwiz.exe /install
O4 - HKLM\..\Run: [NvMediaCenter] RUNDLL32.EXE C:\WINDOWS\system32\NvMcTray.dll,NvTaskbarInit
O4 - HKLM\..\Run: [Recguard] %WINDIR%\SMINST\RECGUARD.EXE
O4 - HKLM\..\Run: [Reminder] %WINDIR%\Creator\Remind_XP.exe
O4 - HKLM\..\Run: [AVG8_TRAY] C:\PROGRA~1\AVG\AVG8\avgtray.exe
O4 - HKCU\..\Run: [SpybotSD TeaTimer] C:\Program Files\Spybot - Search & Destroy\TeaTimer.exe
O4 - HKUS\S-1-5-18\..\Run: [Power2GoExpress] NA (User 'SYSTEM')
O4 - HKUS\.DEFAULT\..\Run: [Power2GoExpress] NA (User 'Default user')
O8 - Extra context menu item: E&xport to Microsoft Excel - res://C:\PROGRA~1\MICROS~2\OFFICE11\EXCEL.EXE/3000
O9 - Extra button: Research - {92780B25-18CC-41C8-B9BE-3C9C571A8263} - C:\PROGRA~1\MICROS~2\OFFICE11\REFIEBAR.DLL
O9 - Extra button: (no name) - {CD67F990-D8E9-11d2-98FE-00C0F0318AFE} - (no file)
O9 - Extra button: (no name) - {DFB852A3-47F8-48C4-A200-58CAB36FD2A2} - C:\PROGRA~1\SPYBOT~1\SDHelper.dll
O9 - Extra 'Tools' menuitem: Spybot - Search & Destroy Configuration - {DFB852A3-47F8-48C4-A200-58CAB36FD2A2} - C:\PROGRA~1\SPYBOT~1\SDHelper.dll
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
O17 - HKLM\System\CCS\Services\Tcpip\..\{8D06D7C5-1A28-4BD5-9FF1-E688AA3FAD5D}: NameServer = 4.2.2.1,4.2.2.2
O17 - HKLM\System\CS1\Services\Tcpip\..\{8D06D7C5-1A28-4BD5-9FF1-E688AA3FAD5D}: NameServer = 4.2.2.1,4.2.2.2
O17 - HKLM\System\CS2\Services\Tcpip\..\{8D06D7C5-1A28-4BD5-9FF1-E688AA3FAD5D}: NameServer = 4.2.2.1,4.2.2.2
O18 - Protocol: linkscanner - {F274614C-63F8-47D5-A4D1-FBDDE494F8D1} - C:\Program Files\AVG\AVG8\avgpp.dll
O20 - Winlogon Notify: avgrsstarter - C:\WINDOWS\SYSTEM32\avgrsstx.dll
O23 - Service: AVG8 E-mail Scanner (avg8emc) - AVG Technologies CZ, s.r.o. - C:\PROGRA~1\AVG\AVG8\avgemc.exe
O23 - Service: AVG Free8 WatchDog (avg8wd) - AVG Technologies CZ, s.r.o. - C:\PROGRA~1\AVG\AVG8\avgwdsvc.exe
O23 - Service: NVIDIA Display Driver Service (NVSvc) - NVIDIA Corporation - C:\WINDOWS\system32\nvsvc32.exe
O23 - Service: PrismXL - New Boundary Technologies, Inc. - C:\Program Files\Common Files\New Boundary\PrismXL\PRISMXL.SYS
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End of file - 4933 bytes