Would moving the Send to Sender button away from the Send to Group button help any? Shal's idea of a default being the same as the email setting with a drop down menu certainly sounds doable and might be easier to understand and follow. Having a separate selection and Send would also make sense in case someone accidentally chose the wrong one. I don't much care for those boxes that do something as soon as you make a selection, especially if you make the wrong one. ;>)
Duane