ASP: using existing Crystal Report with date parameter

Question

I have an existing Crystal Report done in Crystal Reports version 9. I need to display it via an ASP website created in Visual Studio 2008. I have put the Crystal data source and viewer controls on the design page and configured the controls to use the crystal report but cannot seem to figure out how to pass a date to the report which uses it as an input parameter for a SQL Server 2005 stored procedure.

I have tried putting a calendar control on the design page but don't know how to use it to pass the date parameter.

Thanks in advance for any help.

Eric