Just plug this link into your browser or txt yourself: http://preview.seven.com/get/client/dl.do?b=def_seven&l=en_US Choose OTHER, then choose ANDROID. Download the APK. If you haven't allowed 3rd party app sources you will be prompted with this warning. And will be able to enter settings to allow 3rd party. Then Back to click the downloaded file to install. This will allow you to use Exchange with having to purchase Touchdown. I used this on my former windows mobile phone to access my personal exchange server (used their server side software (free )) and my works exchange server.