Doubleclic on an userform control to start a default program

Hi the forum,
In a VBA procedure, I load and show an Userform with a picture in an image control.
Question:
How can I in the doubleclic event open the picture in the default program.

Thanks in advance for your answers.
Tom

I found a solution on this thread
http://www.excelforum.com/excel-prog...ick-event.html
Tom