I have a form, [frmRptCTWEntry]. I have two list boxes, [lstSubjectInReport] and [lstSubjectXCTWLocation]. [lstSubjectInReport] is bound to the form. However, I want the second list box, [lstSubjectXCTWLocation], bound to the first list box. So, when the user selects a record from the first list box, the second list box changes to match it. How do I do this?