I'll bet it's something quite simple. Just send us the Designer code of the form (insert it between[code] ... [/code] tags) and we will probably be able to try it out or spot it straight away. In case you don't know, to get the designer code you click the second icon (Show All Files) at the top of the Solution Explorer window, expand the Form item, and send the contents of the formname.Designer.vb file.

BB

edit: this time Passel beat me to it! It's all those tags that did it.