Installed SQL2005 Developer (default instance) on XP development machine with no problems. SQL server DB engine, SSRS, SSAS etc all run fine on his machine.  Problem is trying to create a database connection to the server with a Visual Interdev project.  The server (using localhost or server name) is never recognized when trying to add a data connection in these applications.  When trying to add data connection, it displays the DSN dialogue, not the usual list of providers etc.

Projects using SQL 2000 on my other development machine have no problem.  Also, I can access the DB server in Crystal reports and other apps.  Anyone have any ideas what went wrong in either the Visual Interdev or SQL 2005 installs?