about:blank removal - Interpretting the HJ log

I am trying to permanently remove the about:blank browser hijacker. I have tried everything including Adware Away, CW Shredder and updating Windows patches. Can someone plse help interpret my latest Hijack This log and advise what I need to do from here?

Logfile of HijackThis v1.97.7
Scan saved at 9:37:24 p.m., on 19/06/2004
Platform: Windows ME (Win9x 4.90.3000)
MSIE: Internet Explorer v5.50 (5.50.4134.0100)

Running processes:
C:\WINDOWS\SYSTEM\KERNEL32.DLL
C:\WINDOWS\SYSTEM\MSGSRV32.EXE
C:\WINDOWS\SYSTEM\mmtask.tsk
C:\WINDOWS\SYSTEM\MPREXE.EXE
C:\PROGRAM FILES\TREND MICRO\PC-CILLIN 2003\PCCIOMON.EXE
C:\PROGRAM FILES\TREND MICRO\PC-CILLIN 2003\TMPROXY.EXE
C:\PROGRAM FILES\TREND MICRO\PC-CILLIN 2003\PCCPFW.EXE
C:\WINDOWS\SYSTEM\RESTORE\STMGR.EXE
C:\WINDOWS\EXPLORER.EXE
C:\WINDOWS\SYSTEM\SYSTRAY.EXE
C:\WINDOWS\SYSTEM\S3TRAY.EXE
C:\PROGRAM FILES\TREND MICRO\PC-CILLIN 2003\PCCGUIDE.EXE
C:\WINDOWS\SYSTEM\WMIEXE.EXE
C:\PROGRAM FILES\TREND MICRO\PC-CILLIN 2003\PCCCLIENT.EXE
C:\PROGRAM FILES\TREND MICRO\PC-CILLIN 2003\POP3TRAP.EXE
C:\PROGRAM FILES\MSN MESSENGER\MSNMSGR.EXE
C:\WINDOWS\SYSTEM\RNAAPP.EXE
C:\WINDOWS\SYSTEM\TAPISRV.EXE
C:\UNZIPPED\HIJACKTHIS1977\HIJACKTHIS.EXE

R0 - HKLM\Software\Microsoft\Internet Explorer\Search,SearchAssistant =
O3 - Toolbar: @msdxmLC.dll,-1@1033,&Radio - {8E718888-423F-11D2-876E-00A0C9082467} - C:\WINDOWS\SYSTEM\MSDXM.OCX
O4 - HKLM\..\Run: [ScanRegistry] C:\WINDOWS\scanregw.exe /autorun
O4 - HKLM\..\Run: [SystemTray] SysTray.Exe
O4 - HKLM\..\Run: [S3TRAY] S3tray.exe
O4 - HKLM\..\Run: [pccguide.exe] "C:\Program Files\Trend Micro\PC-cillin 2003\pccguide.exe"
O4 - HKLM\..\Run: [PCCIOMON.exe] "C:\Program Files\Trend Micro\PC-cillin 2003\PCCIOMON.exe"
O4 - HKLM\..\Run: [PCCClient.exe] "C:\Program Files\Trend Micro\PC-cillin 2003\PCCClient.exe"
O4 - HKLM\..\Run: [Pop3trap.exe] "C:\Program Files\Trend Micro\PC-cillin 2003\Pop3trap.exe"
O4 - HKLM\..\RunServices: [LoadPowerProfile] Rundll32.exe powrprof.dll,LoadCurrentPwrScheme
O4 - HKLM\..\RunServices: [PCCIOMON.exe] "C:\Program Files\Trend Micro\PC-cillin 2003\PCCIOMON.exe"
O4 - HKLM\..\RunServices: [tmproxy] C:\Program Files\Trend Micro\PC-cillin 2003\tmproxy.exe
O4 - HKLM\..\RunServices: [PccPfw] C:\Program Files\Trend Micro\PC-cillin 2003\PccPfw.exe
O4 - HKLM\..\RunServices: [*StateMgr] C:\WINDOWS\System\Restore\StateMgr.exe
O4 - HKCU\..\Run: [msnmsgr] "C:\PROGRAM FILES\MSN MESSENGER\MSNMSGR.EXE" /background
O9 - Extra button: Related (HKLM)
O9 - Extra 'Tools' menuitem: Show &Related Links (HKLM)
O16 - DPF: {9F1C11AA-197B-4942-BA54-47A8489BB47F} (Update Class) - http://v4.windowsupdate.microsoft.com/CAB/x86/ansi/iuctl.CAB?38108.7890509259
O16 - DPF: {30528230-99F7-4BB4-88D8-FA1D4F56A2AB} - http://us.dl1.yimg.com/download.yahoo.com/dl/installs/yinst0401.cab
O16 - DPF: {D27CDB6E-AE6D-11CF-96B8-444553540000} (Shockwave Flash Object) - http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab
O16 - DPF: {A8658086-E6AC-4957-BC8E-7D54A7E8A78E} - http://www.microsoft.com/security/controls/SassCln.CAB