Hi,
1. Open Active Directory Sites and Services.
2. In the console tree, expand the Sites container, expand the site of
the domain controller you want to check, expand the Servers container,
and then expand the Server object.
3. Right-click the NTDS Settings object, and then click Properties.
4. On the General tab, if the Global Catalog box is selected, the
domain controller is designated as a global catalog server.
OR
1. Start the Active Directory Replication Monitor tool. ( You need the
support tools installed) replmon.exe
2. Right-click Monitored Servers, and then add one or more servers by
using the wizard.
3. Right-click the servers, and then click Show Global Catalog Servers
in Enterprise.
Hope this helps
Harj Singh
"Powering Your Active Directory Investment"
www.specopssoft.com