To move Terminal Services CALs from one Terminal Services license server to another, follow the procedures in the following sections.

The documents that you must have available

Before you start to perform the procedures that are described in the following sections, you must have the paper agreement that you received when you purchased the CALs. The agreement number or the enrollment number from the agreement will be required to receive the new CAL Pack ID that is described in the “How to move the CALs” section.

How to move the CALs

To move the CALs, follow these steps.

Note After you move the CALs, you must deactivate the old license server. (See step 10.)

1.     Install Terminal Services Licensing on the target server.

2.     Activate the license server.

For more information, click the following article number to view the article in the Microsoft Knowledge Base:

325869 (http://support.microsoft.com/kb/325869/ ) How to activate a License Server by using Terminal Server Licensing in Windows Server 2003

3.     On the new Terminal Services license server, click Start, click Administrative Tools, and then click Terminal Server Licensing.

4.     In the Terminal Server Licensing snap-in, right-click the Terminal Services license server, and then click Properties. In the Installation method list, click Telephone, and then click OK.

5.     Right-click the Terminal Services license server, and then click Install Licenses. The Welcome to the Terminal Server CAL Installation Wizard dialog box appears.

6.     Click Next. In the Obtain Client License Key Pack dialog box, you will find the license server ID.

7.     Use this license server ID to obtain a CAL Key Pack ID. To install CALs on the new license server, you must have a CAL Key Pack ID. You can receive a CAL Key Pack ID from the Microsoft Clearinghouse or by visiting the following Microsoft Web site:

https://activate.microsoft.com (https://activate.microsoft.com)

To contact the Microsoft Clearinghouse, use the following telephone number:

1-888-571-2048

The representative at the Microsoft Clearinghouse will give you a new CAL Key Pack ID. You can also contact Microsoft Customer Support Services at the following telephone number:

1-800-936-3100

For more information, click the following article number to view the article in the Microsoft Knowledge Base:

319726 (http://support.microsoft.com/kb/319726/ ) Phone numbers for Microsoft Technical Support

8.     In the Obtain Client License Key Pack dialog box, type the CAL Key Pack ID (from step 7) in the Type the client license key pack ID in the boxes below field.

9.     Click Next. You will receive a message that states that the CALs have been installed successfully.

10.  After you verify that the new license server is functioning correctly, deactivate the old license server. To do this, uninstall the Terminal Services Licensing component on the old server.

source: http://support.microsoft.com/?kbid=953918