The RML utilities from PSS have just been updated to include support for SQL Server 2008 along with various enhancement and bug fixes. If you don't know what the RML utilities are I suggest you have a look at this link and take a few minutes to download them and play around some.
http://blogs.msdn.com/psssql/archive/2008/11/12/cumulative-update-1-to-the-rml-utilities-for-microsoft-sql-server-released.aspx