I have a Sony Vaio Desktop and recently had someone install an NVIDIA GForce 210 video card. He said it would increase my memory and performance but now I get a warning message about not meeting the minumum requirements. SL seems to work OK altho when I go to the newer viewers like Firestorm I experience major lag. 99% of the time I use the older viewer one and am alve and well with it. Do I need to worry about the warning? I don't have the cash to buy a pricey video card.