Lukas mentioned that you could subclass PUUser but I
am not sure where you
would tell Pier to create instances of your subclass rather than PUUser.
Pier does not create new users unless you ask it to do so from one of
the system widgets. The list of available users is stored in the
kernel, normally it is a collection of PUUser instances but you can
certainly add other instances in there.
Lukas
--
Lukas Renggli
http://www.lukas-renggli.ch