We recently setup DFS on Windows Server 2008 (non R2). I have the namespace set up, and a couple folder targets in it. What we need to do is have a folder called Corp Info be available within the Legal folder target, and the Accounting folder target, so basically Legal can get to that folder, but won't be able to get to the rest of accounting, and vice versa for accounting. This is a single server set up, so DFSR won't work. Also, the targets are on a Linux based NAS that can't handle symbolic links without serious hacking, but that's out simply for simplicity's sake.
Any ideas out there?