William Shakespeare

now a few days ago i was on my most used account on my computer and outta nowhere it says i have a virus and that everything is infected and anytime i click on anything it says the application cannot be executed because it is infected and this keeps popping up every 5 seconds and its annoying because i have a lot of pictures,videos,music,etc. on that account and its only that account that is infected and no other ones which i think doesn't make sense but whatever is there anyway to transfer my stuff from my old account onto my new one? or maybe fix my old account?because nothing works on my old one. when i click on it to scan my computer it wont help it just scans which is bullshit HELP I DON'T WANNA LOSE ALL MY MUSIC ON ITUNES!!!!!!and other stuff!! unlock iphone 3g