I am learning to develop ASP.NET Web Application using C# language.
However I got the Error Message when I tried to run a Stored Procedure (procFranceCustomers) :

EXECUTE permission denied on object 'procFranceCustomers', database 'Northwind', owner 'dbo'.

I have MSDE - a stripped-down version of SQL Server on my machine. I am the user with
bd_datareader, db_datawriter and db_ddladmin rights.

My question is how can I get permission to execute Stored Procedures for my ASP.NET Web application?

Any help would be greatly appreciated.