Hi. I hope one of you knowledgeable folks can give some good advice on this. I'm not absolutely positive of the sequence of events here so keep that in mind. About a week ago the latest version of Spy Sweeper gave me error messages indicating that all my real-time protection (shields) were all down. I could not resolve this problem and ran my Kaspersky AV. Kaspersky is good, not just at grabbing viruses, but also with worms and other malware. The scan indicated that a worm had been identified having appeared on my system the prior day and another instance was found in my system restore files the present day. I assume it is the same worm being backed up in restore. I should have written down the name but didn't as the message indicated the threat level was not extremely high. Subsequently I could not get Spy Sweeper back up and tried removing and re-installing with no success (Install damaged). I then began to come across all kinds of problems with my XP. My restore points were all gone, my Windows Management Instrumentation was damaged or gone and unrepairable, Windows downloads wouldn't work, and finding "My Computer" on XP took forever. I figured that either a) the worm had trashed my computer or b) there was a bad conflict between something in Spy Sweeper and Kaspersky. (I haven't seen this problem posted anywhere however). Having gone through all of Microsofts proposed cures as well as anything I could find on the web, nothing worked to get things fixed. I have requests in with both Spy Sweeper and Kaspersky but suspect that without Instrumentation Management Spy Sweeper will have no idea of what to do to get the install fixed. At any rate the last known solution from Microsoft and other gurus was to do a reinstall or overwrite repair of Windows XP. I dread this. I was getting ready to back everything up on Acronis before doing the install when it occurred to me that the worms may have been false positives. The worm infected files are backed up in Kaspersky. I am considering restoring the infected files but given the trashing my system has gone through, I'm a bit concerned that things could get worse. Should I restore the infected files and see what happens or go ahead with a risky XP Repair?