samba - May 2009 - Secure client to Windows server

Hello Everyone,

I am looking at the need to look at a directory on a Windows server  
from a Unix box, but that particular data cannot be transmitted  
unencrypted across the network.  Is there a way to set up the Samba  
client to encrypt all traffic to a share on a Windows 2000 or 2003  
server?  That also means somehow setting up the Windows server to  
encrypt a particular share without messing up the other normal shares  
on the same server.

Thanks.
---Hillel