How Do You Do It?
Once you have the CAB file, move it to the root of your SD Card. Do this by plugging in your phone to the computer, or by plugging in the card and transferring the files.
IF YOU ARE CDMA (Sprint, Telus, Verizon, US Cellular) before you begin installation, you must do one other quick thing. Go to Start - Settings - Personal - Phone, and search for the 'Network' tab. When there, ensure you are set to "CDMA Only" and not "Global". Otherwise data will not work!
Once in the root, go to your favorite file explorer and navigate to our storage card, then run the CAB, installing it to your storage card. Get a frosty beverage, this will take a while!
Once you have finished installing, you will go to your start menu and see a file named "Android Project" Click it to load the software.
Once loaded, you will have a prompt asking you for configuration. Make sure your device family is the rhodium tilt2 if you are a GSM (AT&T and T-Mobile) user, RHOD 400 if you are Sprint, and RHOD 500 if you are Verizon or Telus. The phone will vibrate, and Android will boot. I hope you brought a six pack for this one, the first boot will take a good while!
So what's going on?
HaRET is a special bootloader that will shut down Windows Mobile, and then boot Android from your SD card on top of where Windows Mobile once was. It doesn't touch anything on the WinMo end and everything is in this emulated boot-up. However, since it's being emulated, it will not run as fast or powerful as the real thing, but it's close as you can get on the current Windows Mobile phones! It will take a few minutes to boot, so be patient!