Sorry then one more bit of info to add to the Wiki..
I am now coming across users in the last few weeks running MS Windows 7, and of course they dont connect to SAMBA domains..but here is some useful info
Windows 7 refused to join to a the Samba domain stating that the domain in question was not available. Having gone through something similar when we finally added Vista clients I expected to have to update Samba to get this to work. Turns out you have to add two reg keys as well. Since it took me a fair bit of search to find this, I thought I’d document the required changes here, if for no other reason to save myself the trouble when I went to do it again…
1. First you need to be running Samba v3.3.4 or later. Earlier versions have been reported to work, but there are some issues. Since this version is not available in the OS repos (CentOS) I got my copy from the Samba Enterprise site. They carry packages in RHEL, SLES, and Debian flavors and I have been using them for some time.
2. Next the Windows 7 client needs to have two registry keys added.
HKLM\System\CurrentControlSet\Services\LanmanWorkstation\Parameters
DWORD DomainCompatibilityMode = 1
DWORD DNSNameResolutionRequired = 0
3. The following key needs to be changed or you will receive an error when trying to login using a domain accout of “The trust relationship between this workstation and the primary domain failed.”
HKLM\SYSTEM\CurrentControlSet\services\Netlogon\Parameters
RequireStrongKey = 0
Once these changes were made I was able to join the domain. I did receive an error on the join , but the system seems to be working fine.
found this info at
http://ggts.net/2009/05/17/joining-a-windows-7-system-to-a-samba-domain/maybe helps..