Shoutbox

If you know the file name and original location, and if AVG quarantined the original file, you could get out a DOS boot disk and simply copy the quarantined file back to where it should be.

Another option is to go into Recovery Console (Boot a XP CD!) and recover the file from the original CABs on the disk.

Again, this will only be helpful if you can remember which file was cleaned in the first place.