Update
I was able to get HJT to run briefly. It still closed, but it did create a log file:
Logfile of Trend Micro HijackThis v2.0.2
Scan saved at 6:41:47 PM, on 2/26/2008
Platform: Windows 2000 SP4 (WinNT 5.00.2195)
MSIE: Internet Explorer v6.00 SP1 (6.00.2800.1106)
Boot mode: Normal
Running processes:
C:\WINNT\System32\smss.exe
C:\WINNT\system32\winlogon.exe
C:\WINNT\system32\services.exe
C:\WINNT\system32\lsass.exe
C:\WINNT\system32\svchost.exe
C:\WINNT\system32\spoolsv.exe
C:\Program Files\Cisco Systems\VPN Client\cvpnd.exe
C:\WINNT\System32\svchost.exe
C:\Program Files\CA\SharedComponents\iTechnology\igateway.exe
C:\Program Files\CA\eTrustITM\InoRpc.exe
C:\Program Files\CA\eTrustITM\InoRT.exe
C:\Program Files\CA\eTrustITM\InoTask.exe
C:\Program Files\CA\SharedComponents\PPRealtime\bin\ITMRTSVC.exe
C:\WINNT\LogWatNT.exe
C:\WINNT\system32\regsvc.exe
C:\WINNT\System32\WBEM\WinMgmt.exe
C:\Program Files\RealVNC\VNC4\WinVNC4.exe
C:\WINNT\system32\svchost.exe
C:\Program Files\CA\eTrustITM\ppcl.exe
C:\WINNT\Explorer.EXE
C:\Program Files\CA\eTrustITM\ppcl.exe
C:\WINNT\system32\hkcmd.exe
C:\WINNT\system32\igfxpers.exe
C:\Program Files\Java\jre1.6.0_03\bin\jusched.exe
C:\WINNT\system32\rundll32.exe
C:\WINNT\system32\Rundll32.exe
C:\Program Files\Trend Micro\HijackThis\HijackThis.exe
O3 - Toolbar: @msdxmLC.dll,-1@1033,&Radio - {8E718888-423F-11D2-876E-00A0C9082467} - C:\WINNT\System32\msdxm.ocx
O4 - HKLM\..\Run: [IgfxTray] C:\WINNT\system32\igfxtray.exe
O4 - HKLM\..\Run: [HotKeysCmds] C:\WINNT\system32\hkcmd.exe
O4 - HKLM\..\Run: [Persistence] C:\WINNT\system32\igfxpers.exe
O4 - HKLM\..\Run: [Realtime Monitor] "C:\Program Files\CA\eTrustITM\realmon.exe" -s
O4 - HKLM\..\Run: [QuickTime Task] "C:\Program Files\QuickTime\qttask.exe" -atboottime
O4 - HKLM\..\Run: [SunJavaUpdateSched] "C:\Program Files\Java\jre1.6.0_03\bin\jusched.exe"
O4 - HKLM\..\Run: [PPRT] C:\Program Files\CA\SharedComponents\PPRealtime\bin\ITMRTSVC_Logon.exe
O4 - HKLM\..\Run: [GoToAssist Express Customer] "C:\Program Files\Citrix\GoToAssist Express Customer\61\g2ax_service.exe" Start=logon
O4 - HKLM\..\Run: [Synchronization Manager] mobsync.exe /logon
O4 - HKLM\..\Run: [64e83d31] rundll32.exe "C:\WINNT\system32\seqopski.dll",b
O4 - HKLM\..\Run: [BM67db0ead] Rundll32.exe "C:\WINNT\system32\rpkheysg.dll",s
O4 - HKUS\.DEFAULT\..\RunOnce: [^SetupICWDesktop] C:\Program Files\Internet Explorer\Connection Wizard\icwconn1.exe /desktop (User 'Default user')
O4 - Global Startup: Microsoft Office.lnk = C:\Program Files\Microsoft Office\Office\OSA9.EXE
O8 - Extra context menu item: &Search - ?p=ZRxdm429LXUS
O9 - Extra button: (no name) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files\Java\jre1.6.0_03\bin\ssv.dll
O9 - Extra 'Tools' menuitem: Sun Java Console - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files\Java\jre1.6.0_03\bin\ssv.dll
O9 - Extra button: Related - {c95fe080-8f5d-11d2-a20b-00aa003c157a} - C:\WINNT\web\related.htm
O9 - Extra 'Tools' menuitem: Show &Related Links - {c95fe080-8f5d-11d2-a20b-00aa003c157a} - C:\WINNT\web\related.htm
O16 - DPF: {0EB0E74A-2A76-4AB3-A7FB-9BD8C29F7F75} (CKAVWebScan Object) -
http://www.kaspersky.com/kos/english/kavwebscan_unicode.cab
O16 - DPF: {17492023-C23A-453E-A040-C7C580BBF700} (Windows Genuine Advantage Validation Tool) -
http://go.microsoft.com/fwlink/?linkid=39204
O16 - DPF: {1A26F07F-0D60-4835-91CF-1E1766A0EC56} -
http://scanner2.malware-scan.com/setup/webinst.cab
O16 - DPF: {215B8138-A3CF-44C5-803F-8226143CFC0A} (Trend Micro ActiveX Scan Agent 6.6) -
http://housecall65.trendmicro.com/housecall/applet/html/native/x86/win32/activex/hcImpl.cab
O16 - DPF: {30528230-99F7-4BB4-88D8-FA1D4F56A2AB} (YInstStarter Class) -
http://us.dl1.yimg.com/download.yahoo.com/dl/installs/yinst20040510.cab
O16 - DPF: {6E32070A-766D-4EE6-879C-DC1FA91D2FC3} (MUWebControl Class) -
http://update.microsoft.com/microsoftupdate/v6/V5Controls/en/x86/client/muweb_site.cab?1179929834312
O16 - DPF: {9522B3FB-7A2B-4646-8AF6-36E7F593073C} -
http://a19.g.akamai.net/7/19/7125/1452/ftp.coupons.com/r3302/cpbrkpie.cab
O17 - HKLM\System\CCS\Services\Tcpip\..\{E1968D17-10E5-4706-9D75-34B172ABC5C0}: NameServer = 151.197.0.38,151.201.0.38
O23 - Service: Cisco Systems, Inc. VPN Service (CVPND) - Cisco Systems, Inc. - C:\Program Files\Cisco Systems\VPN Client\cvpnd.exe
O23 - Service: Logical Disk Manager Administrative Service (dmadmin) - VERITAS Software Corp. - C:\WINNT\System32\dmadmin.exe
O23 - Service: GoToAssist Express Customer - Unknown owner - C:\Program Files\Citrix\GoToAssist Express Customer\61\g2ax_service.exe
O23 - Service: iTechnology iGateway 4.2 (iGateway) - CA, Inc. - C:\Program Files\CA\SharedComponents\iTechnology\igateway.exe
O23 - Service: eTrust ITM RPC Service (InoRPC) - CA - C:\Program Files\CA\eTrustITM\InoRpc.exe
O23 - Service: eTrust Antivirus Realtime Service (InoRT) - CA - C:\Program Files\CA\eTrustITM\InoRT.exe
O23 - Service: eTrust ITM Job Service (InoTask) - CA - C:\Program Files\CA\eTrustITM\InoTask.exe
O23 - Service: CA Pest Patrol Realtime Protection Service (ITMRTSVC) - CA, Inc. - C:\Program Files\CA\SharedComponents\PPRealtime\bin\ITMRTSVC.exe
O23 - Service: Event Log Watch (LogWatch) - Unknown owner - C:\WINNT\LogWatNT.exe
O23 - Service: Pml Driver HPZ12 - HP - C:\WINNT\system32\spool\DRIVERS\W32X86\3\HPZipm12.exe
O23 - Service: VNC Server Version 4 (WinVNC4) - RealVNC Ltd. - C:\Program Files\RealVNC\VNC4\WinVNC4.exe
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End of file - 5442 bytes