Forms Auth Question

[Tom]

Hi All,

I'm just getting started with Forms authentication and was wondering if
there are any good examples out there that show how to do programmatic
access control. I'm developing a small app that will create a number
of roles programmatically (users will be created by the admin) and the
pages won't know until runtime what credentials will be necessary... it
will depend on the "mode" of the page and data that is being requested.

Thanks!
Tom