Hmm..
Okay, then, do me a favor. Right-click on your desktop and hit "properties". then click the "settings" tab. From there, hit the "Advanced" button. Another window will pop up; hit the "GEforce fx 5200" tab (Or it will be labled as something like that)
From there, look on the bottom where it says "graphics card information" and find "ForceWare version" (Should be the last or second-last item). Thats the number I want from you =) This is important, becasue i'm not sure which drivers are best for your card, but something tells me they just need to be updated... or, perhaps you're using a far too new version and its not compatable with your graphics card.