One point. If you build the panel up by copying a control, then pasting loads of copies onto the panel, the original tab number stays with the last control you pasted on. This will ruin the order that you think the controls are in. So if you put the values into an array of some sort, then add a control, what worked before doesn't work anymore, and it's not easily apparent why. It's got me before, and is SOOOOO irritating!