Slade,
When you go to the REST Services directory for this Map Service layer is the coded domain listed?
Bradford,
No there is nothing special you should have to do. What version of ArcGIS Server are you using and what is the data source (FGDB, SDE)?
Slade,
Do you mean 9.3.1? What service pack? I remember there being an issue with 9.3.1 and domains on ArcGIS Server (doesn't pay to not stay current).
Matt,
No there is no option for the userlist to come from a field. The userlist is only for manual entry of values. The values can come from a coded value domain in the Geodatabase though. But as you said if the values are changing regularly than that might not be an option either.
THANKS! I will look into the coded values option and see if it might work..
Again, thank you for all the work you have done.
-matt