[Samba] Help! How do I make Samba3 + Winbind drop the domain\ on a user's account?

[Dane Ruyle]

Hello,
We have moved from PBIS to Samba + winbind.

In PBIS, after logging in to a SSH session, the prompt (user context?) would be:    username at hostname:
Now, after logging in, the prompt is:   domain\username at hostname:

How do I make it drop the "domain\" ?

This causes issues in other areas as passing "\" is an illegal character.

Should we change the "\" to a "."  ?

Thank you for a great product,
Dane