I probably shouldn't have mentioned it here. I tried in Inventor, but it was a VERY easy feature to add in Acrobat (we have pro 6.0). You make a .pdf of the drawing, and also make a .pdf of the background you want to use. Then open the drawing pdf, under the document menu there is an option to add a watermark. I'll send you a sample when I stop at the office today. Unfortunately you need acrobat for it though. I was going to export the drawing as a .jpg and then use photoshop but this worked out better.