Eventhough the Visual Studio.NET 2005 beta2 is awesome it does not provide strong tools for table creation and manipulating within SQL Server 2005 Express Edition.
Until MS release the next version of Enterprise Manager (titled MS SQL Manager Studio), take a look at EMS MS SQL Manager which also provide Microsoft® SQL 2005 support and can be downloaded for free (trial version).
Also if you're finding AJAX like technology interesting check out GOOGLE Suggest Beta - As you type, Google will offer suggestions.. Did anyone say "COOL!!".