Grandma,
First thing you need to do is download some Anti Virus if you havent already got it and scan your Laptop to see if you have got rid of that Trojan. Normally it wouldnt give you a message if you have got rid of it, but better be safe than sorry i say.
What happens if you put your desktop screen showing nothing?(right click on desktop - Properties - desktop- select none) Do the Icons appear?
Gary
December 2007