Just for those of you who don't want to have to use a new ROM to get this capability.
I post this because I'm on the old school sholes.info (berzerker/birdman v4) ROM and either I or my phone didn't like some of these newer ROMs, so I did it this way. This guide will give you everything you need i.e. all the files, etc. I like this kernel because it gives me 125/250/550/800/950. I have been running it at 800 usually, but like the option to go to 950 if I should so choose.
Read the whole thing carefully please, and the usual disclaimers apply. I have had ppl use this over the top of AdamZ Glass, then try other kernels and then revert; and others with their freshly rooted stock 2.0.1 Droids; all with success.
But I feel the need to re-iterate the potential of it breaking your WiFi and the solution posted. In the set of commands for fixing your WiFi, specifically step 3, if you get an error, GO AHEAD and just continue with the rest of the commands, your WiFi will be fixed.
p.s., if you DO have problems use the contact me link there.