New Rig, need help with BIOS. (P5AD2-E Premium)

Hey guys, I just got my new computer up and running. I need help figuring out which BIOS settings to use, so I'll post my specs and see if you guys can help me:

Intel P4 560 (ES)
ASUS P5AD2-E Premium
PDP 1GB(2x512MB) DDR2 PC2-5600 RAM
ATI Radeon X850 XT PCI-E
Western-Digital Raptor 74GB SATA

I guess that those are all the specs that you guys need. Anyway, I'm having problems getting my processor to run at an 18x multiplier instead of 14x. In the BIOS where it says "CPU Lock" with the options of Auto/Enable/Disable, I've tried all of them and in the BIOS it still tells me that the multiplier is 14x. Also, could anyone tell me some miscellanious BIOS settings that I will want to set?

This is my first time using an LGA 775 system with PCI-E and SATA. Thanks guys!

Hmm, I believe under Intel SpeedStep in the bios, if you set it to maximum, the CPU will run at it's max multiplier.