Ok, so I had some kind of TROJAN horse virus a while back and thankfully it was found by AVG (but not by stupid Symantec...).   Anyways, I've noticed since I had that virus I have been unable to have an image on the desktop.  If I choose to have something as an image it'll show up when I'm logging on or off and will show up when I hit ctrl-alt-delete to get to the task manager.  I can have a "pattern" for the desktop image, but that's it.  I can see the list of pictures from the My Pictures folder, but I can't scroll through them and I can't click browse either.  I have tried everything to activate Active Desktop or whatever and I'm getting nowhere.  I created another log on name on my computer and it let me have a background image just fine.  Is there anyway to fix that so I don't have to have an entirely new log on profile?  I've also noticed that DOS games no longer WORK on my computer.  My boyfriend is really good with computers and he can't figure out what the problem is for the life of him.  Also, for a while there was a red circle with an X in it that was in the part of the taskbar that's next to the clock (where all of the start up stuff is) that would say "Your computer has been infected" whenever you would hover over it, but nothing would happen when you would double click it.  I did a virus scan with Symantec (that was before I ever knew about AVG) and it would say there were no viruses detected.  My mom said she double clicked the red circle and it just started scanning the computer and it had some weird bug THING pop up.  I then did a Windows update and it disappeared shortly after that.  Any idea what that could have been?  Could that be why my desktop doesn't work properly anymore?  Please help!  I'm getting so frustrated!It would help to KNOW what OS you are using.