Step 1: Install the AD LDS Server Role
Applies To: Windows Server 2008
You can use the following procedure to install the Active Directory Lightweight Directory Services (AD LDS) server role on a computer running Windows Server 2008.
Membership in the local Administrators group, or equivalent, is the minimum required to complete this procedure. Review details about using the appropriate accounts and group memberships at Local and Domain Default Groups (http://go.microsoft.com/fwlink/?LinkId=83477).
To install the AD LDS server role
Click Start, and then click Server Manager.
In the console tree, right-click Roles, and then click Add Roles.
Review the information on the Before You Begin page of the Add Roles Wizard, and then click Next.
On the Select Server Roles page, in the Roles list, select the Active Directory Lightweight Directory Services check box, and then click Next.
Finish adding the AD LDS server role by following the instructions in the wizard.