Deploying to an existing database from VS 2010 on TFS

Question

I am trying to find a way in VS2010 to add a few objects to an existing database without scripting out all of the existing objects. This is a maintenance project that is adding a table, altering an existing table by adding a column, creating a foreign key constraint between them and altering a stored proc to use a new column in the existing table rather than a hard coded case statement. I tried a database project and then converted it to SSDT in an attempt to find a way to not drop the database.

The scripts generated from this database project generate drop and create statements for the database. If I manually remove the database portion of the scripts, the result is exactly what I need. Is there a way to force the project to NOT drop and recreate the database, or is there a project type I can use instead?