bangkero
Did you run the registry key setting change on your windows 7 PC workstation as mentioned in this very thread ?
ie
With SME Server 8bx we have provided the necessary registry keys in:
/home/e-smith/files/server-resources/regedit
So no manual editing of the Windows 7 is required
You can access it from a web browser using
http://smeservername/server-resources/regedit/ie win7samba.reg
(replace smeservername with the name of your sme server)
Copy win7samba.reg to your windows workstation and double click on the reg file to add it to the registry.
In Win 7 you may need to allow registry editing, as there is lot's of security enabled by default.
In another thread you say you are trying to join a windows server to a sme server domain, is the Windows 7 machine a server or a workstation ?