Thanks to Melba23's GUIExtender UDF, gui's are way more dynamic! I have a small problem though, when trying to use 'custom' controls.. I have three sections each with a few IP Address Controls, and if i don't manage the placement of the each section's controls individually (ControlMove ~ in this case) when expanding/retracting they won't be displayed correctly.. I managed to get it to display correctly with the '_GUIExtender_UpdateControls()' in my example, but i'm not 100 percent happy with it