How can i overclock with my bios? "video"

if you want to overclock it , just change the bus clock . if you want to get 3 Ghz set a value of 230 for the bus clock and let the multiplier to 13. this should give you 3 Ghz and about 920 fsb. try it and see.

^+1. I (and many others) will not spoon feed you (aka walk you through step by step). Do some work before (ie. read the C2D Ocing guide evo linked to).
This might sound harsh, but you'll be thankful later.