Q. What OSs are supported as System Center Configuration Manager (SCCM) 2007 Branch Distribution Points (BDPs)?

A. BDPs are a new feature in SCCM 2007 that enable a non-server OS (you can still use a server OS) to act as a distribution point for a location. Windows XP SP2 and above are supported as BDPs provided the computer is part of an Active Directory domain, is an SCCM client, and isn't configured to use an Internet-based management point. Because the BDP shares information using a file share, the server service must be running on the BDP computer.

Also remember that a client OS only supports 10 concurrent connections to its file shares, so if you have more than 10 machines at a location, understand that only 10 will be able to connect at any one time.