Do I need CAL for a customized program connect to SQL Server 2005 Express Edition?

Hi all,

I am developing a program to connect to SQL 2005 Express. I don't know if I need any CAL license in order to make the connection. If it is not necessary for the Express Edition case, how about if my client upgrate to SQL 2005 in the future? Do I need CAL license for SQL 2005?

Thanks for any advice given.

You do not need a CAL to connect to SQL Server Express. Each cient does need a CAL for all other editions.

Buck Woody