|Turn off System Restore, many people don't know that it hides in there...|
Also, AVG will NOT delete vundo..
Start your computer in safe mode with networking, turn off system restore. Download and run both of these programs doing a FULL SCAN (check full scan, and also check every box after that), malwarebytes first, then superantispyware... Make sure to update them first!
I know 100% positively that these 2 programs working together will remove trojan.vundo and 99.999999% of any other virus out there.