Question about video card

I was a little questionable about whether or not The Sims 2 would run on my computer. It's an HP Pavilion 531w, 1.3GHz Intel Celeron processor, 256mb RAM, Intel 82810E graphics controller (integrated), and I have plenty of space on my hard drive. My computer meets all the min requirements except for the video card. I though what the heck, and bought it to see if it would work anyway. It installed perfectly fine, but when I went to play it, I got an error message that it couldn't find any DirectX 9.0c compatible graphics adapters in my system. And so I looked at the Intel website to find out what I could do, and read that for my video card, the latest driver was from 2002, and no more would be released, so therefore my video card wouldn't be compatible with DirectX 9.0c and would not run The Sims 2. So, I'm looking for a new video card, keeping in mind the video cards that are supported by The Sims 2, and I think I might go with the GeForce FX5200 128mb PCI card,. I know I don't have an AGP slot, there are 3 PCI slots, 2 empty, 1 I have no idea what's in it, couldn't really tell, just was able to read the model number off it, #90109. I found a card on newegg.com for $67 and was wondering where else I could look, maybe get a better deal? And will the GeForce FX5200 work for my computer? I think I should be able to install it myself, since I know how to install memory, but I might need some more help, like how to switch the computer so it uses the PCI card and not the onboard video card? Any help would be appreciated.