Man, you don't give up - thanks! Unfortunately, no improvement. Current hijackthis log:

Logfile of HijackThis v1.98.2
Scan saved at 16.07.27, on 28/08/2004
Platform: Windows XP SP1 (WinNT 5.01.2600)
MSIE: Internet Explorer v6.00 SP1 (6.00.2800.1106)

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:\Program Files\Common Files\Symantec Shared\ccEvtMgr.exe
C:\WINDOWS\Explorer.EXE
C:\Program Files\Common Files\Symantec Shared\ccApp.exe
C:\PROGRA~1\PANICW~1\POP-UP~1\PSFREE.EXE
C:\Program Files\MightyFax\MFNTCTL.EXE
C:\lotus\smartctr\smartctr.exe
C:\Program Files\Common Files\EPSON\EBAPI\eEBSVC.exe
C:\Program Files\SpywareGuard\sgmain.exe
C:\Program Files\Common Files\EPSON\EBAPI\SAgent2.exe
C:\Program Files\Norton AntiVirus\navapsvc.exe
C:\WINDOWS\System32\svchost.exe
C:\Program Files\SpywareGuard\sgbhp.exe
C:\Documents and Settings\Brian Ferris\My Documents\HijackThis.exe
C:\Program Files\Messenger\msmsgs.exe

R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.bbc.co.uk/news
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Window Title = Microsoft Internet Explorer provided by BT Yahoo! Broadband
R1 - HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings,ProxyOverride = 127.0.0.1
O2 - BHO: SpywareGuard Download Protection - {4A368E80-174F-4872-96B5-0B27DDD11DB2} - C:\Program Files\SpywareGuard\dlprotect.dll
O2 - BHO: (no name) - {53707962-6F74-2D53-2644-206D7942484F} - C:\PROGRA~1\SPYBOT~1\SDHelper.dll
O3 - Toolbar: Norton AntiVirus - {42CDD1BF-3FFB-4238-8AD1-7859DF00B1D6} - C:\Program Files\Norton AntiVirus\NavShExt.dll
O3 - Toolbar: BT Yahoo! Companion - {EF99BD32-C1FB-11D2-892F-0090271D4F88} - C:\Program Files\Yahoo!\common\ycomp5_2_3_0.dll
O3 - Toolbar: &Radio - {8E718888-423F-11D2-876E-00A0C9082467} - C:\WINDOWS\System32\msdxm.ocx
O4 - HKLM\..\Run: [ccApp] "C:\Program Files\Common Files\Symantec Shared\ccApp.exe"
O4 - HKLM\..\Run: [ccRegVfy] "C:\Program Files\Common Files\Symantec Shared\ccRegVfy.exe"
O4 - HKCU\..\Run: [PopUpStopperFreeEdition] "C:\PROGRA~1\PANICW~1\POP-UP~1\PSFREE.EXE"
O4 - Startup: Lotus SmartCenter 97.lnk = C:\lotus\smartctr\smartctr.exe
O4 - Startup: MightyFax.lnk = C:\Program Files\MightyFax\MF.EXE
O4 - Startup: SpywareGuard.lnk = C:\Program Files\SpywareGuard\sgmain.exe
O4 - Global Startup: MightyFAX Controller.lnk = C:\Program Files\MightyFax\MFNTCTL.EXE
O9 - Extra button: BT Yahoo! Sidebar - {51085E3D-A958-42A2-A6BE-A6A9B0BAF276} - C:\Program Files\Yahoo!\browser\ysidebarIE.dll
O9 - Extra 'Tools' menuitem: BT &Yahoo! Sidebar - {51085E3D-A958-42A2-A6BE-A6A9B0BAF276} - C:\Program Files\Yahoo!\browser\ysidebarIE.dll
O9 - Extra button: Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\Program Files\Messenger\MSMSGS.EXE
O9 - Extra 'Tools' menuitem: Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\Program Files\Messenger\MSMSGS.EXE
O16 - DPF: UKOnLineSigningApplet - https://secure.gateway.gov.uk/java/U...ningApplet.cab
O16 - DPF: {1239CC52-59EF-4DFA-8C61-90FFA846DF7E} (Musicnotes Viewer) - http://www.musicnotes.com/download/mnviewer.cab
O16 - DPF: {17D72920-7A15-11D4-921E-0080C8DA7A5E} (AimSp32 Class) - http://makeover.substance.com/save/makeover.cab
O16 - DPF: {2D9F7B63-EC7C-43FF-A41D-6E9EC984A5B9} (GGSecSign Class) - https://secure.gateway.gov.uk/java/GGSecSign.cab
O16 - DPF: {30528230-99F7-4BB4-88D8-FA1D4F56A2AB} (YInstStarter Class) - C:\Program Files\Yahoo!\common\yinsthelper.dll
O16 - DPF: {54823A9D-6BAE-11D5-B519-0050BA2413EB} (ChkDVDCtl Class) - http://www.gocyberlink.com/winxp/CheckDVD.cab
O16 - DPF: {62475759-9E84-458E-A1AB-5D2C442ADFDE} - http://a1540.g.akamai.net/7/1540/52/...eInstaller.exe
O16 - DPF: {74D05D43-3236-11D4-BDCD-00C04F9A3B61} (HouseCall Control) - http://a840.g.akamai.net/7/840/537/2...ll/xscan53.cab
O16 - DPF: {7D1E9C49-BD6A-11D3-87A8-009027A35D73} (Yahoo! Audio UI1) - http://chat.yahoo.com/cab/yacsui.cab
O16 - DPF: {90A29DA5-D020-4B18-8660-6689520C7CD7} (DmiReader Class) - http://support.euro.dell.com/global/...r/PROFILER.CAB
O16 - DPF: {CE28D5D2-60CF-4C7D-9FE8-0F47A3308078} (ActiveDataInfo Class) - https://www-secure.symantec.com/tech...a/SymAData.dll
O16 - DPF: {DF780F87-FF2B-4DF8-92D0-73DB16A1543A} (PopCapLoader Object) - http://download.games.yahoo.com/game...ploader_v5.cab
O16 - DPF: {E77C0D62-882A-456F-AD8F-7C6C9569B8C7} (ActiveDataObj Class) - https://www-secure.symantec.com/regi...ActiveData.cab
O16 - DPF: {F58E1CEF-A068-4C15-BA5E-587CAF3EE8C6} (MSN Chat Control 4.5) - http://fdl.msn.com/public/chat/msnchat45.cab