Since fixing an 020 entry in HJT removes the registry entry but not the file, I would check manually for C:\WINDOWS\SYSTEM32\wineil32.dll just to make sure Prevx did its job. BTW, nice call on this one, David.
I would also still be interested in seeing the VundoFix log if you don't mind posting it. It's not that I think you're infected any longer - I just want to see the log for my own education.
Finally, I think you should get rid of your old, possibly infected restore points after creating a clean point:
1. Click Start>All Programs>Accessories > System tools > System Restore
2. In the dialog box that appears Click in the radio button to Create a Restore Point
3. Click NEXT
4. Enter a name you will remember if you need to find this again (like Clean Point)
5. Click CREATE
You now have a clean restore point, to get rid of the bad ones:
1. Click Start>All Programs>Accessories > System tools > Disk Clean Up
2. Click OK on the C: drive
3. Click the More Options tab
4. In the System Restore section click the Clean Up button
You will also want to get rid of the VundoFix backups so nothing nasty ever gets restored
