Alright so I usually don't come here with computer problems, but I'm fucking stumped. Every time I try to run a program, whether it be from desktop, start menu, program files etc, it either says "There is no program associated with this type of file" (usually just iTunes), or pops up with this "Open With.." window. I thought I might have a trojan so I ran a full system scan with Norton and didn't turn up anything, I don't know what the problem is. This has only been happening since some time yesterday. Even my programs that are supposed to start with the computer don't start (uTorrent, AIM, etc). Any ideas? Thanks in advance.
EDIT: This is what I got when I tried to open AIM, and everything else except iTunes (I got the no file association shit with that) from the Start Menu.
*I do not use uTorrent to participate in illegal activities, I have it because I like the icon*