I want to overclock this card but i do not have an idea of what i am doing. Could you give some advice? I want to run Crysis a little smoother but can't buy another card at the moment.

Crap I was afraid i would get that answer. Thanks! I guess i just gonna have to save up.

You know what that makes me feel a whole lot better about it. Thanks for the "spanking" in the end it was what i needed.

screw the 8500, i got a 9800 gt ultimate now. I had to get rid of that older card it was killing me.

lol, yeah agree with Fumz, you arnt really going to get any decent FPS rate with Crysis regardless of having the ability to OC your old card.
Advice: I OC'ed my old Nvidia 6600gt and blew it up lol, so i stand well clear of OC now, usually a few software updates from the developers can sometimes incourage better gaming perfomance, usually i purchase a new card every year. My routine goes like this:
Basically I'm a year behind on the latest cards, i purchase last years "dazzler" and that has the ability to play all games till the following year and so on in good settings, The benefit of this is you can run a majority of the latest games without having to pay £250+ in some instances.
Sorry im rambling now lol, you get my drift thou lol.