Creating a build configuration in TeamCity using Powershell

I am looking for a How To on this also. Found it on Stackoverflow.

Anyone know how I can create or delete a build configuration in TeamCity, only using Powershell? I am trying to automate our entire project setup process; have looked at the REST API but that appears to be mostly read-only.

http://stackoverflow.com/questions/3494894/creating-a-build-configuration-in-teamcity-using-powershell