MS has a walkthrough on creating an email template here:
http://office.microsoft.com/en-us/ou...in=HA010245004
The problem you are going to have is there is no way to automaticly use this template when clicking "new e-mail".
You can add your template to the menu though which would keep it a one click process. To do this please see the bottom section here:
http://www.techrepublic.com/article/...plates/6129939