https://www.wincustomize.com/Forums.aspx?ForumID=165&AID=109403#844858
**Edit**
The link is to a thread where this topic was discussed and worked through...
To my knowledged there is no way to get LS to work on a domain...but in the thread the link points to, it tells you how to set your prefs to get the logon to work normally..
Probably doesnt help still, in an office type situation.. you may be stuck just using the Screensaver with the Password activated...