I don't think that Intel chipset supports DX8.0 or any T&L, so you might find a few games it just cant run. Also from what I have seen Intel tends to have lots of bug in their drivers and rarely updates them. I remember a friend of mine had a P3 850 that he thought could take on my Duron 600@900, but he did not know what graphics he had in his $1700 computer. I gave him a disc full of downloaded 3D demos and he could only run about half of them. It turned out he had an I810 chipset. My Voodoo3 2000@166Mhz was about 20 times faster than his system. Even at 640x480 he was barely able to run at 15FPS.
Your going to find that even if you can run Call of Duty (a great game) you will have to run at so low of a resolution, you will have trouble spotting people more than about 50 feet away at best. You will be at a destinct disadvantage. I had enough trouble on my laptop. The game does not use the same setting in MP as SP and it was at the default 640x480 on my laptop. I have a GeForce4 Go420 (not the best, but MUCH better than integrated). I got my but wipped by my brother as he liked sniping I could not see him. I started just running around like made jumping until I say a few muzzle flashes and hoped I could get close enough to shoot him with my machine gun. I played again online at 800x600 and it was better, but nothing like my main system does.
AMD Phenom II x4 945 3Ghz | ASUS M4A77TD | 2X WD 1TB SATA 2 hard drive | 2x2GB Corsair XMS3 | nVidia GeForce 8800 GTS | ATI TV Wonder Theater Pro 550 | Antec P-160 case | Antec 650w Earth Watts | LG Blu-ray Super Drive | LG DVD RW | Windows 7 Pro