[Can my PC run GTA IV?]

My ram is ddr2 I just copied that junk from a website that had my computers statistics. I am not sure about the motherboard though I havent done anything to it yet but I'm gonna open it up later and see what kind of surprises I'm in for. Btw its an HP pavilion a1523w.

[Can my PC run GTA IV?]

Im not much of a computer buff so how much work do I need to do to my pc to make it run gta4 at at least medium standards?

1GB/2GB(max) ram

Intel pentium D 820 dual core/ 2.8ghz

L2 cache 2mb

16x dvd drive

integrated ATI Radeon Xpress 200

OS:Windows xp Media center edition

250GB hard drive

Aside from the GTA standpoint anyone have other suggestions to help it out? Money not being a factor, because I thought about upgrading the os.