I think this has to do with the schema. SQL Server 2005 uses schema instead of ownership.
The fully qualified names is somewhat like this
FOR SQL 2000
Server_name.catalog_name.Owner.Object_name
... just an opinion
For SQL Server 2005
Server_name.catalog_name.Schema_name.Object
Albert B. Matubis
Database Administrator: Trend Micro PH
MCP. MCAD. MCDBA. MCT
MCTS: SQL Server 2005
MCTS: Business Intelligence
MCITP: Database Administrator
MCITP: Business Intelligence Applications Developer