While the Macs can all see Windows machines and other SMB shares in the network, the Windows machines running Win 7 Pro cannot see a single Mac nor their shares. Everything is setup correctly according to ever article I have ever read. When trying to connect from the Windows side, I am prompted for credentials but we never authenticate even though the account and password are correct. I've turned firewalls off and on, on and off but Windows machines see no Macs. All are on the same subnet and the other Macs can see what is shared.
MS level one support was stymied too.