What video card can i put in?

hello. i want to get a new video card for my comp. its a HP Pavilion Slimline s3200n Pc but idk which to get and IF it will even fit in the case. so any ideas? i just want a better one that it allready has it has a Nvidia GeForce 6150. but i need something with a little more kick. cuz i play battlefield 2, bf2142, Americas army. etc. i want a video card that can handle those at its max.|||your motherboard supports one PCI Express x16 slot so you should buy a pci-e card. what you pay for really is what you get when you buy a graphics card so it all depends on what you want to spend. also remember vista supports directx 10, while xp only supports dx9. the best way is to make a decision on what you can actually afford and from there go and read reviews on the latest cards. http://www.tomshardware.com/reviews/Comp… is a reliable source of information. all cards are reviewed and benchmarked to give you an idea of what you can expect from it performance wise.