I'm trying to prepare a digital image file for professional printing, and having some challenges with the format which the printing company requires. The file is at www.mauitradewinds.com/test2.png
The printer requires a CMYK PDF with a print size of 8.75" x 6.25", and crop marks which are set back .125" from every edge. The final product will measure 8.5" x 6.0", without any white border around it, so the PDF will need to have exactly .125" of white border. I have Acrobat 9 Professional, but I don't know how to convert the png to the required format, scale it, and apply crop marks. Please provide instructions.
Perhaps it would be easier for an expert to just produce the PDF, but I may need to make changes to it, so step by step instructions are relevant.