[Zope] Raise Unauthorized?! - and logging in new users: two questions

[David Hassalevris]

Hi Zopers,

I did some research on this ... but im up against deadlines :-)

(1):
Apparently <dtml-raise Unauthorized> creates a "rendering loop".  That
is, you raise Unauthorized,
get the login screen, enter a VALID userid/password, click OK and you
get yet ANOTHER login screen.

This isnt very helpful.

I want to be able to login new users without the need for the user to
terminate the browser and 
restart.

I am really hoping that someone has solved this problem (without turning
to 3rd party login managers).

(2):  Also, is there a way to login a user "programmically", that is, by
avoiding the
browser login screen and logging the user in via a python script or
DTML????

Any insights please!
Thanks,
David