How to find FSMO Roles and Seize in windows 2008.
Domain wide roles are configured in Active Directory users and computers. Right click and select domain and here option is operations master.
Forest roles Domain Naming master is configured in active directory domain and trust right click and select operations master. It will let you know the roles.
(c)Forest roles Schema Master is not accessible from any tool as they want to prevent this. Editing schema can create serious problem in active directory environment. To gain access you need to create snap-in and register dll file by regsvr32 schmmgmt.dll.
Seizing of Roles
In case of failures of any server you need to seize the roles. This is how it can be done:
For Schema Master:
Go to cmd prompt and type ntdsutil