[Samba] Guidence needed....

[googleplex]

Hello,

I have a couple a questiosn and hope you guys out there can help me or
at least point me in some directions... I'm currently planing
deployment of samba and apache+ftp with LDAP auth.
I've already setup a debian-powerpc distro to play around with.

a) I've a MacOS X 10.3 Server with LDAP and I'd like to use LDAP auth
for samba. is it possible? Are there any compatability issues?

b) is it possible to use single-sign-on feature alá kerberos4/5 with samba?

thanks for your patience,
Yours, Plex