Authenticatind Against two Domains

[forums]

I would like to know if there is a way that I can setup a linux box 
between two different windows domains / ADs 
we have organization A and organization B. 
Each organization has its own infrastructure. We would like to put a 
server between the two organizations with a share on it, that both 
organizations can share files on. I would like full rights to only to 
users that need to have access to that share, the ability to fully 
login. 
So I am thinking that it will be done in such way that users try to 
connect to the share (drive S:) and they will be authenticated against 
KDC "A" if that fails, they will be authenticated against KDC "B". if 
that fails they will get a message saying that it failed. I don't mind 
creating accounts on the local machine, but I don't want to have to 
synchronize passwords, and I can't have a user with an account on both 
systems, and I can't have trusts between the two domains. 
I think it could be done using PAM and Kerberos. Any help will be 
greatly appreciated. I prefer to have that on a Solaris 9 system, but 
I don't mind installing it on a Linux system. 
Thanks, 
Hodrige.

---
[This E-mail scanned for viruses]