Database/Table List in SQL Server

I was wondering if anyone could tell me how to obtain a list of the available databases on an SQL Server, and also a list of tables inside of a particular database on the SQL Server. I am wanting to add them to a list box so that the user can choose his database and table from a dynamically updated list.

Any information would be greatly appreciated.

Thanks,

Green Onyx

List of databases (names):
Connect to "master" database(you must have permission)

"SELECT name FROM sysdatabases"

List of tables in database:
Connect to database

"SELECT name FROM sysobjects where type='U'"