What video card should I get?

What is a decent 512mb nVidia video card I can get for under $100 that will fit into a Dell XPS 410 ?|||best you can get is right here. http://www.newegg.com/Product/Product.as…|||Probably a 7600-based card, which is ok for gaming but not spectacular. It'll probably be 256MB as well, as you can't get much graphics card for under $100.|||For under $100 you're probably not going to get really any better then what's in it already