override odbc file

We have a pc application written by a vendor that charges large sums of
money to make the simplest change to the system.

The system is written in Delphi, runs on W2K, uses ODBC ( Client Access
drivers ) to "select" from a logical file on our AS400.

We want to change the file name the pc appl uses from "INTRAL24" to
"INTRAL31". Same rcdfmt, same keys, just different record selection
criteria.

( switching the select criteria in the logicals on the 400 would require a
file name chg and recompile in over 50 pgms on the 400.  We would rather chg
the file name in the pc appl )

Is it possible to "override" the odbc file name at the client access level
on the pc, external to the delphi written pc appl ?

On the 400 side, are there odbc exit pgms which enable a redirect of the
odbc i/o request from 1 file to another ?

Thanks,

Steve Richter