sdb1031,
take a look on zeebedee tutorials at
http://www.winton.org.uk/zebedee/manual.html.
There you will find how to configure the server on 2008 and the client at pfsense.
The gui was built to be a server, but if you need/want you custom config, you can install package filer and save your own config and startup script at pfsense.
att,
Marcello Coutinho