What pc graphics card would I need to buy for my pc to run games with similar graphics to that of a ps3?

Avoid the 2nd configuration. Pentium? That's like from the ice age.

The X3 would do well as both the games are not really heavy on the processor. As for COD4, You'll get around 30 fps at highest detail levels without AA. But be prepared for the occasional graphics lag spike.

Fps will drop to the low teens if any smoke is around, although only briefly. The card runs Crysis on a mid/low combination of settings at that resolution at around 30 fps, so I'd expect it to do worse with warhead. If possible, drop 1GB of ram and the card reader which will give you a few $$ more for a better graphics card.

I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.