>Can I add a check box to my messagebox, something like "dont show this message anymore ?
The standard MessageBox doesn't have many options. To have a MessageBox which you can fully control, you are better off creating your own. Just create a form that accepts parameters and returns a value.
Difference in opinions hath cost many millions of lives: for instance, whether flesh be bread, or bread be flesh; whether whistling be a vice or a virtue; whether it be better to kiss a post, or throw it into the fire... (from Gulliver's Travels)