[Apatty]

I'm new to this site and to the world of custom ROMS, and tweeks to my HTC TP. I have thus far managed to upload Android and the tethering to my phone. My question is how do I do this and similar tweeks that require this "HKEY_" example:[HKEY_LOCAL_MACHINE\Software\HTC\PHONE]. I don't understand where to find this.