How to install TFS Build Server on build machine so it uses a Service Account

I wanted to create a remote build server to allow for Continuous Integration in my project. The TFS Build service needed to run under a "Service Account" (a non-interactive account with limited privileges). To install and configure the machine I followed the following process:

1. Sign on to the machine with an account with Admin privileges
2. Give "Service Account" membership in the local administrators group
3. Log off and login into the server with the "Service Account"
4. Install the TFS Build Service - which will provide the appropriate and limited permissions to the "Service Account"
5. Log out
6. Log back in with an account with Admin privileges and remove the "Service Account" from the administrators group.

This process has been working fine for me for the past 2 weeks