Clockgen can work but you can't increase voltages or change the multipliers. Because of this you will be limited in how far you can overclock. The best place to go is the BIOS but if you have a prebuilt system from Dell/HP/etc then the BIOS will not have any overclocking options.
Go to bios and see if you can change the multiplier, fsb, clock...
what would be the process of overclocking? would i change the clock speed first?
HP uses Asus built motherboards but the BIOS will be locked up. Clockgen would be the only thing you can use.