Using BDE in a net

Hi!

I am teaching Delphi 3 at highschool. We have an internal net. When I want
to
create a table with the BDE I can't and I get the message "can't access the
directory". This is I have understood due to that some files are
writeprotected.
My questions are:
Which files cannot be writeprotected and how can I configure
the BDE so those file can be placed somewhere else.

Grateful as usual!

Lars-Erik Fr?berg
Stockholm