Root your HTC Android phone with unrevoked
The tool provides simple rooting for five HTC Android phones: the Incredible, Desire, Aria, Hero, and Evo.
Windows users: you'll need to first load the included HBoot drivers -- Linux and Mac users won't. You'll also need to make sure that no other programs are trying to access your device via USB (like HTC Sync or DoubleTwist, for example).
[via Droid Life]