I am running the Win 7 Beta 64 bit on a system with a 5.8 experience index. I am using two NVidia 8800 GTS video cards in SLI mode. The slide show themes are not available on my system. I have tried the registry changes for adding WinSATScore and setting it to 500, as suggested on another site. I have installed the latest drivers from Windows Update and have tried the latest NVidia drivers for Vista. The themes are also not available under Screen Saver/Photo. Are the slide show themes actually included in Win 7 or is there something wrong with my system? Any suggestions?