I have a dell OptiPlex GX520 with Windows XP and I need an updated video card or else skyrim will not work. My current video card is a Intel(R) 82945G Express Chipset Family
From what I am seeing here you can just about get ANY card thats reasonable and run it. You currently are running on integrated graphics (not a video card), its possible that you have a video card already hooked up with another plug for your monitor (generally down lower on the case), Otherwise check out this website it gives a distinct list of what graphics settings you can have and what cards you can use: http://www.uesp.net/wiki/Skyrim:System_Requirements
If you need some help picking a specific card (or just wanna get more bang for your buck) just let me know what kind of price range your working with I can try to find you something that will best suit and run at highest settings possible (for your price range)
From what I am seeing here you can just about get ANY card thats reasonable and run it. You currently are running on integrated graphics (not a video card), its possible that you have a video card already hooked up with another plug for your monitor (generally down lower on the case), Otherwise check out this website it gives a distinct list of what graphics settings you can have and what cards you can use: http://www.uesp.net/wiki/Skyrim:System_Requirements
If you need some help picking a specific card (or just wanna get more bang for your buck) just let me know what kind of price range your working with I can try to find you something that will best suit and run at highest settings possible (for your price range)