If a connection to the old system is no longer relevant then surely it's just a 10 minute job to update the existing data and selection list definition?  There may be some more elegant solutions but I bet they would take longer.

Yes, that's what I'm planning.  There's also the issue of converting the data from the old app to import the historical info - a lot of lookup tables and so on but not impossible.

I'm also considering joining Custom_Captions into the view.  I can then have the translations in the grid which should sort correctly.  That will work so long as there aren't any users that use a different language - probably ok in this case.  Or I could change the sql for the grid dynamically in the asp to include the user's language translation - that might work.

I've tested joining Custom_Captions into the view and then having the translations (Capt_UK) instead of the selection field in the grid and it works well.