How to create a user with name dbo and loginname KING

How to create a user with name dbo and loginname KING.
So that When I open Users Tab in the database, it should read Name as dbo and lOGIN AS kingCreate the login for KING, then use sp_changedbowner (http://msdn.microsoft.com/library/default.asp?url=/library/en-us/tsqlref/ts_sp_ca-cz_30s2.asp) ?

-PatP