Hi, I had the same problem - I ran the AVG uninstaller tool from their website but it didn't fully uninstall the product. I followed the instructions that EdinWV provided on this website and IT WORKED PERFECTLY! Thanks! I am re-copying the instructions here:
EdinWV Feb 14, 2009 7:24pm GMT
If the removal tool doesn't work (I could not get it to work on a friend's PC running XP recently) here is an (almost) foolproof way of removing AVG:
download and install CCleaner (www.ccleaner.com) This is a free and very effective cleaner (you can contribute later if you feel so moved, but the program is fully operational in its downloaded form -- and I have no interest whatsoever in this program.)
run the reg cleaner -- I have been using this thing for months and it has never caused me any difficulty whatsoever.
Go to tools on CCleaner and run uninstall AVG. Works like a charm and removes all vestiges of AVG from your PC.
Good luck and a pox on AVG's house!