Is this ATI Radeon X1600 Pro 512 MB AGP compatable with my pc?

As long as your computer has an AGP graphics port it will work. But the machine itself is probably the limiting factor for games, meaning that adding this graphics card won't help much with newer games. It's only got a 1.8 Ghz processor and 256 MB RAM (though you may have expanded it). I'd recommend just buying a new machine. You can get a desktop with 2GB RAM, 2.4 Ghz Dual-Core processor, a 256 MB video card, and a 300 GB harddrive for around $500. And yes, it is a decent card (but if you buy a new machine, it probably won't be compatible because it's an AGP). Hope this helps.