I am purchasing Windows Server 2008 Enterprise and 25 Copies of Windows XP Professional. Do I need to purchase 25 Windows Server User Cal's as well? What is the Windows Server User Cal's? I'm also purchasing Exchange server 2007 SE. Will this be an additional 25 User Cal's?

You need to have a client access license for each machine that is going to be connecting to your domain. 1 Server 2003 CD-Key License 25 Windows XP CD-Key Licenses 25 Windows Server CAL's Holy Wow.

As Jestible says - Since you are purchasing Windows 2008, you will need one server license for each server you install. You will need an XP Cal for each pc. You will need Windows 2008 CAL for each computer that connects to the server. For Exchange, you will need to purchase the Exchange license and you will need to purchase an Exchange CAL for each client using Exchange.

OK, I have Purchased the following: Windows Server User CAL (Includes Software Assurance) Quantity: 25 Title: Office Professional Plus 2007 (Includes Software Assurance) Quantity: 25 Title: Windows Server 2008 Enterprise Edition 32-Bit/x64 (Includes Software Assurance) Quantity: 1 Title: Windows XP Professional English/Multilanguage (Includes Software Assurance) Quantity: 25 I have everything now, except I don’t see a disk with the 25 Server User CAL’s. Does it come in a disk form? (I was mailed all the software from microsoft.)