Like i said in my previous post, chances are good your computer won't boot if you make a big jump in FSB (i.e 200 straight to 300). It's best to change the FSB by very little amounts. Personally, i say, if your BIOS or OCing utility allows you to increase the FSB by only 1 MHz, do it. If your multiplier is unlocked, you could also try lowering the FSB and raising the multiplier. This would be more beneficial, because the FSB is the rate at which your CPU "communicates" with the rest of your computer. If you raise the FSB, you raise the speed on all your parts. Eventually, there will be a time when one component will not be able to keep up (usually RAM). You could get into RAM overclocking, but that requires tons of reading. I mean tons.
Examples:
200MHz FSB, 10x multiplier = 2000MHz
100MHz FSB, 20x multiplier = 2000MHz
BTW, just so you know, this information may have some gaps, so if you or anyone else would like to correct me, i'm all for it. I believe that all of it is 100% correct, but if there happens to be something wrong, i'd like to know. Also, if anything doesn't make sense, feel free to either post back or PM me.