you only need one cursor.
do this for you child combo.
1) set the rowsourcetype property to 3
2) the rowsource should contain the SELECT SQL statement such as "select f1,f2 from child where child.id = THISFORM.MYPROPERTY into cursor mychildcursor".
THISFORM.MYPROPERTY has your parent.id_pk or if you're using MYVARIABLE to hold the parent.id_pk, it has to be declared as public in the LOAD method of your form.
Work as if you don't need money
Love as if you've never been hurt before
Live as if this is your last day to live
Dance as if no one's watching