Windows will not support a cloned monitor on Omega Drivers. You will need to uninstall the Omega and install ATI drivers. Sorry, I didn't know you were using Omega Drivers, I have the same problem, and wish that I could. But the 5.7's seem like very good drivers from ATI, and using ATITOOL I was able to reach the same scores as I was previously with Omega Drivers and Radlinker.