samba - Feb 2004 - Problem with integration samba in a domain with ActiveDirectory 2003

i need help about sending encrypted passwords in konqueror with samba. 
when i made this in command line it works very fine but if i want to do 
that in konqueror it send only plain passwords. I've got samba 3.0.0.15 
and the computer is member of a domain with ActiveDirectory 2003.

Thanks