Andrew Steffy has put together a video showing off the two, 2.2, two two two, II hack (Android 2.2 running on HTC’s HD2 – no flare included) and offers up some helpful links in the video’s description:
A quick look at Android on the HD2 and how to get it running on your device.
A lot of info on the porting of Android to the HTC HD2
The different Android builds
Miri’s WM6.5 HD2 v17 rom
Site for premade data images with higher capacity
Enjoy at your own risk!