What version of catalyst are you using. I notice that sometimes catalyst will act funky and only allow me to clone screen 1, and sometimes it will swap the displays and stick the desktop on display 2 and put only the background on display 1. I have to sit there and keep hitting detect screen and then hit swap. I am using a 1250 Xpress which is built into my MoBo. Also, what operating system are you using, i notice that alot of people are having the issue you have when on Vista.