It does have a pci-express slot. I checked, I want to upgrade to an ATI XPRESS 1300 PRO. I am getting into pc gaming but this onboard card is stopping me. I play CS on this card and personally dont think it is that bad. I also dont have a gaming monitor but I probably won't see a difference. What scares me about upgrading is that in Source, I disconnect from servers a lot, mainly because of my wireless connection, and I fear this will happen even on other games.
I did not get this computer with gaming in mind, but now that the 360 does not interest me as much as it uesd to, I am leaning towards pc gaming. The 360 games that interest me are going on the PC but its just that connection problem that scares me