Reporting serivces - sql express

Hi all,

I have a computer with 2 instances of sql server.One is sql developer edition and the other is sqlexpress.

My reporting services reports were first build and deployed in the sql developer instance.( the report manager shows the reports in the reportserver and reportservertempdb in the sql developer instaqnce)

Now i want to check if every thing works on the sqlexpress edition.

How do i configure and where so that the reports will work using the sqlexpress.