Over clock my amd 64 3200

[Unknown Fatal]

I want to over clock my processor it seems to run at high percentages. Here are my system specs:

Windows 7 Ultimate
1 gig of ddr ram
nvidia 9500gt graphics card
amd 64 3200+
Hard Drive space is irrelevant but almost a terabyte

 

[yaang]

1GB ddr2 800 ?