It can be done.
I created the database with the table and columns you describe and ran your asp code. The row was added without any problem. Also able to insert a row using ODBC from withing VFP.
Are you able to insert to the database from VFP?
You might want to post this to some forums where lots of Fox people hang out. Two are:
http://www.universalthread.com
http://www.west-wind.com
I'll look at the Fox dbc and associated files if you email them to me. My email is
don.g.hagan@kc.frb.org
good luck