Is this computer good for GAMING?

Your RAM is kinda skimpy, but at least it's 800Mhz and not 667. However, that video card is bad. It will run CS, but any new games will only run at medium, if you're lucky. As for speed, your CPU is 2.3Ghz, which is pretty good. Your CPU is fine, but, your graphics card isn't the best, but it'll work.