Johnobrucy

hello,i need help in regards to getting more fps in games for example when i play the game''C&C renegade as an example/everyother that the requirements are satisfactory, ,im only getting 17-25fps on average..first i will start with my specs...

Intel Celeron 2.80Ghz (socket 478) **-PGA2 , L1 8kb L2 128KB
120GB maxtor 7200rpm(296kb bad sectors)
40GB seagate 7200rpm
DVD drive
CD drive
1024 PC3200 DDR RAM (400mhz)
Nvidia Geforce 6600GT (AGP 8x) all drivers are updated.
Nvidia settings are as follows
antialisingFF
antistropicFF
image settings:HIGH PERFORMANCE
vsyncFF
my power supply is 200w,im not too sure if thats got anything to do with it.
what i dont see is for all the games i buy the requirements are way beyond my cpu but they show really slow performance.
i have done a fresh install of xp,installed drivers and and the same performance issues..
do not know what to do...
if you can help me in anyway , that would be much appreciated...