How?... Er...we dont know anything about your computer, and if you've just started a new thread because the other one didn't get answered the way you want, I'll simply lock this one, and you won't get any then either.
Its different on all PC's...different specs, means different overclocking ratios... and so, many ways to do it. Its hard to just be given a tutorial.
Though heres a thread on a P4 Northwood that might interest you if thats what you have...:
Just check on the web. You'll find something I'm sure, though you must remember that, theres a chance you won't find a tutorial based on your exact specs, and so the results won't be the same.