^^^
Here ya' go -
This link might be easier than manually listing BIOS options and their paths, while cross-posting back and forth in here:
http://www.thetechrepository.com/showthread.php?t=41
Link provided courtesy of Tony @ The Tech Repository Forums
I realize you have a P5W-DH, but yours and the P5B-Dlx BIOS' are somewhat similar in the basic funtions, and this guide is a pretty in depth listing of BIOS features and options.
The description of changing the CPU's multi option starts in the 6th pic down, from the top of the link I provided.
For your board speciffically, here's a review that has a lot of BIOS pics and info:
http://www.neoseeker.com/Articles/Hardware/Reviews/asus_p5wdh/3.html
Link provided courtesy of neoseeker.com reviews
The above link is simply a mobo review, and isn't as in depth as the 1st link I supplied, but it is specific to your mobo. It's not an optimaization guide, but simply a mobo review that contains a lot of BIOS screenies. You maybe be able to play them both against each other to get both optimaztion and BIOS path info.
Use the optimization and review guides as references, and don't hesitate to ask further questions here, if you'd like. If you have specific questions regarding motherboard options, there is a mobo section here for Asus, where you may get more specific and timely answers. Your mobo is very popular here, and in w/i the overclocking community as a whole.
HTH,
~ Strat ~