>>but I'm told there can't be any mapped drives. They want me to come up with another way for the app to find its data and supporting files.
Any possibility of using UNC paths rather than mapping? You could wrap file access in forcepath() or issue a SET PATH early on.
"... They ne'er cared for us
yet: suffer us to famish, and their store-houses
crammed with grain; make edicts for usury, to
support usurers; repeal daily any wholesome act
established against the rich, and provide more
piercing statutes daily, to chain up and restrain
the poor. If the wars eat us not up, they will; and
there's all the love they bear us."
-- Shakespeare: Coriolanus, Act 1, scene 1