You could give it to me..... my ATI 9500 Pro should run it fine. and then explode

. like click said get the 6600 GT or get a new mobo and proc. soudns like your still running DDR not DDR2 so you could get a nforce 4 board and a 3500+ for a couple a bucks than get a good PCI-E card. or maybe you have DDR2 forgot when they switched to DDR2 think it was the intel 915 chipset. anyway you could do that also but i think your prolly running 865 chipset. so in conclusion, your stuck spending a bunch of money either way.
PS: Game looks awsome