My m'board is an asus K8V and the online manual is very good.
Best thing would be to look in the bios set up and just note the settings initially.
I would then check the m'board manual or get the manual on line if you don't have a hard copy.
When I first looked at mine the processor clock/ multiplier settings were not what I expected but were correct.My old machine and motherboard didn't work in the same way as the CPU speed multiplier was 'locked' but you could change the fsb and the memory multiplier seperately.
Bit different on my new machine.
Just tread carefully before making any big changes and if you have same m'board as me mail me and I will pass on my settings to you if you want.However the manual is the place to start as at least you can check - hope that helps.