How can i add PDF files to my smug mug site?

[mccphoto]

I have downloaded Drop Box but I am not sure what to do next? I would like for my customers to be able to print order forms off easily and quickly.

This is my site http://mccphoto.smugmug.com/ - any suggestions or help is greatly appreciated!

Thanks,
McClain Photography

[Andy]

http://andydemo.smugmug.com/gallery/1587996_jct2U