These links are from Microsoft Technet. I find the site very useful.
http://social.technet.microsoft.com/forums/en-US/itprovistanetworking/thread/8b228f88-ca0a-4c7a-a4c6-d0f8b09603a4/
http://social.technet.microsoft.com/forums/en-US/itprovistanetworking/thread/2ae702ae-b0a3-480e-90a3-d6a4a9ad5806/