In that case I would suggest something on the order of either creating a custom form to display your wait message/graphic that would be non-modal or possibly creating ( or finding on the web ) a user control to display a "Working" message/graphic while you do your calculations. I have nothing in my library of this type or I would give it to you.

Bill

>
>I need to do long calculations between messages like
>
>? 'Starting log calculation'
>DoLongCalculation()
>? 'Ending log calculation'
>
>I dont understand how to use messagebox for this.