Come on guys now seriously. He wants a simple overclock of 200mhz. 2.8 to 3 ghz. Very simple, very easy. If you own a board that will not take a Phenom 920 from 2.8 to 3ghz without simply bumping the buss speed a little, you need to get rid of it, or you don't need to be overclocking. We are all impressed with your vast knowledge in the universe of overclocking. Using all the big words like "frequency" , "mulitiplier", "divider" and the like. I just don't believe a 200mhz overclock is going to require confusing the OP with all the extra things, unless he does come back and say he is having a further problem.
But I seriously doubt he will.