>When do you use the ControlSource property for the column and when do you use the ControlSource property for the control?

If all controls in the column use the same controlsource, that is, in most cases. In some situations it might be necessary to have a different controlsource for example for the active control than for the rest of the controls.

>If you use the ControlSource property for the column to you always set the Bound property to .T.?

Yes.

Christof