Every few months I need to update a Terminal Server or Citrix box to login, by default, to a particular Windows Domain. Every few months just isn't enough to sear the info into my brain. So here, for my benefit as much as anyones, is how to change the default domain that Windows logs into. Of course, we're headed for the registry. Run regedit and dive down:
HKLM
SOFTWARE
Microsoft
Windows NT
Current Version
Winlogon
(I'd take a screenshot, but we're buried a little too deep this time)