Rya,
It sounds like you're using MS's ODBC driver to connect to the Paradox tables. It could be that the Paradox tables are Level 7 tables. MS's driver only supports Level 5 and older Paradox formats.
You'll need to either obtain an ODBC driver that fully supports Level 7 Paradox tables (also called Version 7) or cast about for a relatively recent copy of Paradox itself and then convert the data to something that Access 2000 fully supports, like DBF or something similar.
Alternatively, you might be dealing with password protected Paradox tables. In that event, you'll need to supply the appropriate password.
For more information, I would suggest posting in the Access for MS Office forums.
Hope this helps...
-- Lance