We are developing an application which will use Delegated Authentication.

How do we get it enabled for my developer account?

Hi
I'm building a Sinlge Sign-On solution involving SalesForce and I have a question regarding the logout mechanism:

I have a partner application that redirects to SalesForce, by using SSO the user that has already been authorized (delegated Authentication)
on the partner application side doesn't have to re-enter this information again when accessing SalesForce.

When the user decides to log-out from his SalesForce session is there a way to get the user to be logged out from the partner application session too,
or vice versa, when the user first logs-out from the partner application how can he be logged out from the SalesForce session?

Thanx