Utorrent download from web has caused other... my aol, my norton internet security, my aol

Question

my aol, my norton internet security, my aol deskbar, my windows media player, my ms works, my internet explorer have been "blanked". My two year old son got on my system while I stepped out of the room and clicked on the utorrent download that I was thinking about but hadn't decided to do. I uninstalled it and now I have the other problems. PLEASE HELP. I have a windows vista home basic system.