I've done a great deal of work on overclocking my own systems for gaming purposes. I use a Soyo Dragon and it comes with the ability to overclock in 1Mhz steps. The only advice I can give on this subject is my experience through trial-and-error. First, I'd suggest getting a temperature monitor for the CPU that you can watch outside the GUI in windows (even one in the BIOS is fine.) You want to make sure that you also keep the feature to automatically shut down the system if you reach a near-burnout temperature.
What I did: Got a digital readout of my temps, installed a whole bunch of fans to keep my system cool enough, and started stepping things up VERY slowly....I wrote down EVERYTHING that my system was doing and when i saw trouble, I made like Windows and returned to the last known good configuration.
Is this the proper way of doing things? I'm not sure, it's just the way I did them. The first thing you should do, while you're still at your desk, is go get the information on your chip so you know what your safe zone's are.
Feel free to IM me if you want help, I live at my desk :D