Is your Visual Studio Team System 2008 Database Edition GDR installation confused?
Does your menu suffer from multiple instance disorder?

Here is what you can do about it.

1. Make sure that Visual Studio (devenv.exe) is closed.
2. Start an elevated command prompt.
3. Run the following two commands:
   

   "%ProgramFiles%\Microsoft Visual Studio 9.0\DBPro\DBProRepair.exe" RemoveDBPro2008 "%ProgramFiles%\Microsoft Visual Studio 9.0\Common7\IDE\devenv.exe" /ResetUserData

Now restart Visual Studio again, and the problem should be cured.

-GertD