The Freshbar takes a bit of work to get rid of (I know because I recently had it).
Scan with HJT and have it fix all the entries that say about:blank, all the O17 entries, and the O15 entry.
Reboot into Safe Mode
Search for, and delete the following, if found:
Unlodctl.exe
Nlsfuncs.exe
Pentxpl.exe
Openconf.exe
Iecust.exeNlsfuncs.exe
Openconf.exe
Iecust.exe
Msij.dll
Msvw.dll
Spnping.dll
Icust.dll
Dnsauth.dll
Qappsrvc32.exe
Taskopen.exe
Dx9vbc.dll
Mwx.dll
Hdon.dll
Dte.dat
Menu.txt
(Most will probably be in your c:\windows\system32 folder)
Go to
Start, Run, and type in regedit
Go to
HKEY_LOCAL_MACHINE, Software, Microsoft, Windows, CurrentVersion, Run.
Click on Run and look in the right-hand pane for taskopen and hdon
Right-click on these two, if found, and delete them -- and nothing else!
Exit regedit
While still in Safe Mode, do a full system scan with your antivirus program and fix anything it finds, or let us know what you can't fix.
Reboot normally.
Do a full system scan with TrendMicro's free online scan ( http://housecall.trendmicro.com/housecall/start_corp.asp )
Again, fix what it finds or let us know what can't be fixed.
Go to Windows Update and get the Critical Updates for your computer. Hold off on SP2, however, until your system is clean.
Close all browser windows, scan with HJT, and post a new log.