FQDN in login screen

Customer is switching from a local domain name (company.local) to an FQDN. (At my suggestion they are starting over with a new domain, not renaming!)

The customer's website is hosted elsewhere, not locally, so I set the domain name to ad.company.com. (Didn't want to mess around with split-brain DNS.) Seems OK.

When I am on the logon screen in Server 2008 R2 it shows the logon domain as the NetBIOS name (that is, it shows: "AD"). How can I get it to show the FQDN, or something a little more descriptive.

I already tried the DCacheNamesDNSNames reg key without joy. And I'm assuming Windows 7 workstations will have the same issue.

Any suggestions? "AD" isn't very descriptive.

EDIT: Can't use rendom to change NetBIOS name of domain because customer will be using Exchange (on another server)
milhouse537Asked:
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NetfloConnect With a Mentor Commented:
What you're seeing is the netbios name as its been logged into before. Have you considered UPN suffixes, allowing users to logon with their email, etc.

Reference: http://support.microsoft.com/kb/243629
and http://technet.microsoft.com/en-us/library/cc772007.aspx
This may allow you to achieve you desired result.
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milhouse537Author Commented:
I guess it's not really possible. But thanks.
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