so i got portal and originally he said it would not run it but it ran fine. So i wanted to know if i could run other games like Black Ops COD games Batman ect. here are the things i know about my computer. (keep in mind im only 13 so im not too good with computers....

2.00GB of RAM Platinum(R) 4 CPU 2.80GHz 2.81GHz (I have Windows XP Version 2002) My video Card is: GeForce 6200 its memory size is 512MB ( i just got this Video Card like a couple of months ago) and can you tell me what all of this stuff means? and ask me anything else you might need to know to know if i can play PC games like the PC games listed above...Thanks!