1st you have to upload the scan to the internet.
either your web site or to the BB web space provided by Greg. If you are uploading here, click on file upload at the top of the page. If it tells you how many bytes uploaded, then you did it.

Cut and paste this into the "Optimal Image URL" box below your post.

http://www.chipguide.com/tcbuploads/slab2.jpg

Take out the "slab2" in the above and replace it with your file name. Best to upload simple file names. Only jpg's will show on the BB. file names are case sensitive.