MSSQL 2005: Rename DB Server Instance Name?

Programmer Question

Hi,

Can somebody tell me how to rename the DB server instance name and a DB name
in MSSQL 2005?

Right Now I Have

SERVER/OLDNAME

-- oldnameDB

I want to change the server instance and also change the db name.

I have tried:

EXEC sp_renamedb 'oldName', 'newName'

and that has changed the dbname as it appers in the tree directory.
But, when I do "select @@servername" it is the old name. Also,
the MDF and LDF files are still the old name.

How do change instance and db names as a clean sweep across the server?

Thanks.

Find the answer here