[Samba] Passing domain name to PPP

[Tom Hallewell]

Hi-
Our PPP RAS server is running Samba 2.2.8a and winbind.  We want to
authenticate dialup users through the PDC (Win NT 4 SP6).  However, in order
to do so, the dommainname needs to be prepended to the username, ie,
DOMAIN+USERNAME.
We don't want to have to teach all our dialup users to add the domainname
when they login to RAS, so we are looking for a way to script this.
Has anyone tweaked PPP/CHAP to automatically prepend the domain to the
username?
Thanks for any help,
Tom