You should see an option in your bios for HTT multiplier.
HTT speed = FSB* HTT MULTI * 2
Keep your HTT between 1700 and 2200 and you should be good.
You should also see an option to for RAM divider. Depending on the quality of your RAM and how far you're going to push with your overclocking you may not need to use a divider.
Explore your bios it should all be there.