How to check if printer is switched on..plz help

Hi All

I need some help.
I have a form with an image on it and want to print the form.

I want to check whether the printer is switched on or not…

If not then I want to display a message box asking to switched on the printer first and then print.. and it exits the procedure unless the printer is switched on..

I hope you all got me what I wanna say.

Plz help me

Thnx in advance
Jack