Paradox Tables on CD on Network CD Device

In the Borland Technical document TI3104 it decribes how to use Paradox
databases on CD's.

My added complication is that these CD's will be mounted on a network CD
Drive device. Since Delphi/Paradox will try and use the session
NetFileDir for PDOXUSRS.NET how can I fudge it so that I don't have to
set NetFileDir to a directory with read, wrire, create access. ie. stil
be able to set NetFileDir to the path of the Mapped CD.