For several years I have been using a testing tool called qmTest that allows me to do test-driven database development for some Firebird databases.  I write a test for a new feature (table, trigger, stored procedure, etc.) until it fails, then modify the database until the test passes.  If necessary, I do more work on the test until it fails again, then modify the database until the test passes.  Once the test for the feature is complete and passes 100% of the time, I save it in a suite of other tests for the database.  Before moving on to another test or a deployment, I run all the tests as a suite to make sure nothing is broken.  Tests can have dependencies on other tests, and the results are recorded and displayed in a browser.
Nothing new here, I am sure.
Our shop is aiming toward standardizing on MSSQLServer and I want to use the same procedure for developing our databases.  Does anyone know of tools that allow or encourage this kind of development?  I believe the Team System does, but we do not own that at this point, and probably will not for some time.
I am not opposed to scripting, but would welcome a more graphical environment.
Any suggestions?