A little tip for those who don't know
The 2 major factors in game performance are:
1. RAM (Memory) - 1gb is the minimum for most games now, but I would recommend at least 2gb....more if possible
2. Graphics - At least 256mb of graphics RAM for a performance boost - 512mb or higher would also be better, but then the price can increase substantailly.
When upgrading, look at these 2 items first, then CPU
Of course, there are other factors to bear in mind when upgrading:
Hard Drive performance - Look for at least a 133 IDE drive running at 7200rpm. Even better would be a SATA-II drive (faster than IDE by a long way)
Regards.
DJM.