If Spybot is the only program flagging Smitfraud-C.Toolbar888, it could be a false positive that was previously reported. See Post #3 here: http://forums.spybot.info/showthread.php?t=8668
However, you are also reporting Winsoftware (the makers of several rogue security products such as Winfixer, WinAntiVius Pro 2006, ErrorSafe, DriveCleaner, SystemDoctor 2006) which can be related to vundo and/or smitfraud infections.
We have a self-help section for removing common malware.
Please see the self-help tutorial How to remove the Smitfraud / Generic Zlob
with SmitfraudFix.How To Remove Winfixer/Virtumonde/Msevents/Trojan.vundo
When done with that download and scan with AVG Anti-Spyware 7.5
in "SAFE MODE
Be sure to print out and follow the AVG Anti-Spyware Install-Scan Instructions
Post back if your still having problems after following these instructions.