avg is good if you have the paid version which i have. the free version only works for so long and doesnt help much compared to the paid version. i built my desktop last year around this time and been using avg ever since. never had any problems. upgraded from xp to vista then vista to windows 7 where im currently at. look into getting bittorrent or something and getting the avg paid version. its so much better. you can always restore your computer back to an earlier time and wont lose any files or anything. also avg paid version has its own firewall on it and its better then the windows firewall. look into it.