http:/ / www.valesoftware.com/ products-msde-manager.php
Manage MSDE/SQL databases via an easy-to-use graphical interface. You can add, edit and delete databases, tables, views, users, roles, rules, stored procedures, defaults, user defined datatypes and functions. Table designer to add/edit/delete/cut/copy/paste columns, set primary keys, triggers, indexes and constraints. Change the authentication mode. Change the datatypes of your columns (Vale Software - MSDE Manager is about the only one with this functionality)