The forms are NOT linked to ABVFP. You need to do that. It is done by setting the form action to be :
http://www.yourdomain.com/ABVFP/dbts_abvfp.php
The info willbe stored in the ABVFP database. You do NOT need to copy the tables, ABVFP will automatically create the tables at the first submission.
You do, however, need to set correctly the field names extensions so ABVFP can "understand" what type of field it needs to create.
I.e. the extension -A to a field name, means 30 chrs, -B means 60 chrs, -C 200, -D 500, -E unlimited (actually 64 000 chrs)
Please read the tutorial, it is ALL explained there.