You can't attach pics via PM. I couldn't see any 'Manage Attachment' icons in the PM options you can choose from anyway.

There is another, more complicated way of posting pics. It involves becoming a member on a photo server like www.photobucket.com and uploading your pictures from 'My Pictures' to Photobucket. This then allows you to copy/paste the web address from that image onto this site. Make sure you have the IMG tags around the address like this: [IMG]http://yourpicture.jpeg [/IMG[