ok, so as far as drivers etc... you completely uninstalled any old drivers etc first right? once these drivers are gone, make sure your chipset drivers are up-to-date. now install your most up-to-date vid card drivers. yeah that thing about two vid cards is prolly SLI. SLI is where you computer uses 2 graphics cards as if they were one. it's good stuff as long as you have the power for it and your computer doesn't overheat and what not. anyways. if you can play games divx videos should be no problem. what kind of videos are you watching (video file type) and what codecs do you have?
