It depends on the Server operating system and if you have Group Policy
Management Console installed or not. You could try going to the OU right
click and see if there is a tab there or in properties for Group Policy and
if there is open it and you will be able to link that way. The link below
explains in more detail with an example domain.
Steve
http://technet.microsoft.com/en-us/library/Bb742376.aspx#EEAA
http://www.microsoft.com/windowsserver2003/techinfo/overview/gpintro.mspx
Next you will link the Linked Policies GPO to another OU.
1.. In the GPWalkthrough console, double-click the Active Directory User
and Computers node, double-click the reskit.com domain, and then
double-click the Accounts OU.
2.. Right-click the Production OU, click Properties on the context menu,
and then click the Group Policy tab on the Production Properties dialog box.
3.. Click the Add button, or right-click the blank area of the Group
Policy objects links list, and select Add on the context menu.
4.. In the Add a Group Policy Object Link dialog box, click the down arrow
on the Look in box, and select the Accounts.reskit.com OU.
5.. Double-click the Headquarters.Accounts.reskit.com OU from the Domains,
OUs, and linked Group Policy objects list.
6.. Click the Linked Policies GPO, and then click OK.
