Very Computer

Hi
Is is possible to use a filename extension other than DB for a Paradox
table?

When I try renaming a .DB table to some other extension (leaving the
filename (sans extension) and all other associated files  the same)
I can create a TTable and connect this to a TDBGrid for example but on
opening the table I receive a 'Currupt Index error'.
I have set the TableType to ttParadox.

Do I need to use CreateTable to create the table from scratch.

If it must be .DB is this a Paradox language restriction, BDE, Delphi or
other?
Database Desktop insists on .DB when saving or loading a table.