Hi Petter,

Daniel already pointed out that Interbase and Firebird only allow
SYSDBA to change users passwords. However if you really want to allow
users to change their own passwords there is an article on the
following website that explains how to enhance the ISC4.GDB database
to support this capability...
http://www.volny.cz/iprenosil/interbase/

hth

--
Geoff Worboys
Telesis Computing