Also, the registry keys are different:

Had to change:

SET @REGKEY = 'System\CurrentControlSet\Services\MsDtsServer'

to

SET @REGKEY = 'System\CurrentControlSet\Services\MsDtsServer100'

No, 2005 and 2008 are different.

Here's a listing of the service names:http://blogs.technet.com/b/fort_sql/archive/2010/05/31/list-of-sql-server-service-names.aspx

Great script, by the way.

For SQL 2008, the following will return a "specified service does not exist as an installed service" error:

EXEC master.dbo.xp_servicecontrol N'QUERYSTATE',N'MsDtsServer'

I changed the service name to MsDtsServer100 and it returned...