using Tupdate to insert a new record in paradox

Can anybody help me with Tupdate.  I find it to be a badly supported
component but it has good potential use.  On one programme I am writing I
call the update event to insert a new record but instead of adding the
parameters I have prepared it inserts a new record with the data from the
current Tquery record.  If anybody knows what idiot point I am missing don't
worry about telling me.  I can take criticism.

Thanks in anticipation.

dennis clarke