Hi philharris,
Whether it's worth it or not depends on your circumstances, some people just overclock for the fun of it and to obtain high scores in benchmarking software. Whilst others use it to gain a genuine increase in speed, I did this myself - I overclocked from 1.86GHz to 2.8GHz and certainly in Vista I have noticed the speed difference. However overclocking does shorten the lifetime of your
CPU and if done incorrectly could render your
CPU useless. You may also need extra hardware, such as a new
CPU fan and heatsink to keep temperature low, as heat increases when the
CPU runs faster.
As for guides on how to do it, there are lots around the internet. General and specific
CPU family guides. What is the make and model of your
CPU, and I'll see if I can find an appropriate guide
upgrader
[Moved thread to Overclocking Forum]