Ok so i got a lot of helpful info (or at least some) from my other thread here: http://www.techspot.com/vb/showthread.php?p=574344#post574344

But now i am wondering if by chance i could overclock my CPU using an Intel D915GAV mobo.

I went into the BIOS and found absolutely no way to change any of the clocks, and there was a "Burn-in Mode" but that did absolutely nothing as well? Did i get completely !$@#ed with the PC I bought?

If there is nothing in the motherboard manual, or on the website for that motherboard, your chances are pretty limited...

It is looking that way :(

I was hoping i could just overclock my PCU and not have to possibly having to buy a better one...but even then, the best that my current mobo supports are some higher end P4s, and no dual/quad cores :/

If you bought your pc from a distributer or shop and its branded, chances are it will be bios locked against overclocking.
Sorry, not much more to say really.