I went back and forth with Foxconn's online support and this is the last message from them and the last message I sent to them...

"Dear ****,

We guess there is a little misunderstanding about the option "CPU And NB HT Speed", the item should be "CPU-NB HT Link speed" that refers to the HT link speed from CPU to NB.
It will not change CPU clock but the HT link.

Best regards,

Foxconn Technical Support"

"so what your telling me is, there is currently no way to change the north bridge multiplier? if so, could you possibly ask you're BIOS engineers to some how add that function to the next BIOS? There are quite a few of us Destroyer owners who would like to be able to change the North bridge multiplier. 2009/04/25"

I have yet to get a response from that last message....how ever the original message was responded to with in 24 hours. I guess when you ask them to change something, there not too interested with you anymore.