I am working on a project plan that will enable a site to site VPN connection with our "sister" company. I believe that I understand the concept of interesting traffic between the peer sites, but I am still wondering how a user on the remote site will access a file or a folder on my Network. I have an NT Domain and my sister site does as well. Is some sort of Trusting needed here? Do some of my remote users need to exist in my SAM database? Is there a WINS issue ? Etc. Etc.