You could do one of the following:

1) Download and install the MySQLMan application that allows you manage your MySQL tables and databases. You will need to update your .cfg file with the new field you added.

2) Add the new field in the .cfg file and then run the setup.cgi file again to add the field.

3) Learn some SQL syntax/commands and via telnet you can INSERT new fields into your MySQL table(s).

If it was up to me, I would do the first option.

Regards,

Eliot Lee