.SCR is a screensaver extension. It is weird you got that as an IM message. It is possible she might have accidentally cut and paste something. First, I would look in your windows folders to see if that screensaver actually exists. If it doesn't, I would run a good anti-virus (not Norton's). Actually, you may want to try a couple free ones or trial ones, like NOD32, AVG, Avast, or something else. There is a virus called hinhem.scr.