Well, I'm not Deezer, but I doubt you'll get an answer from him. To find video cards, Ebay is a good place, but it all depends on what you are looking for. For the most up to date one, go to
http://www.nvidia.com/ and purchase the Geforce 4, however, it'll cost you quite the pretty penny. My recommendation is to go for a Geforce 2 200MX on Ebay, they're still pretty good, and generally cost around $40, which is reasonable for a decent video card.