Locked Myself Out of JBoss Portal

I'm evaluating the JBoss Portal and am attempting to create a portal for a subset of users. While trying to adjust permissions to only allow a user to see a certain set of pages I managed to take away all permissions to the default page (at least I think that's what I did) so I am unable to even access the portal at all with any ID, even the admin ID. Is there a way I can reset the security so I can access the portal again? I could always re-install, but if there's another way I'd rather do that.

When I go to http://localhost:8080/portal it brings up a blank page with the login box in the middle.
When I log in with either the test user ID or the Admin ID, I get the error: Access to the specified resources has been forbidden.

Thanks for any help.
Karen