billym,
It's pretty straight forward, you just turn it on in the workgroup section of the server-manager and patch the registry on the workstations as documented. It does seem to throw desktop.ini files all over the place initially but this stops after a couple of logons. Also, I can't find a way to supply group policies or printer drivers to the work stations which is a pain when there are lots of clients.
However, the SME 7.x beta line uses samba 3 which looks to have far more features. Try reading samba.org.