If the pictures are in your computer, click the "BROWSE" button where it says File Attachments.
This will bring up your computer files. Find the file with the pictures. It is often called "My Pictures". Double click on the picture you want. This will put the picture's file name in the second box.
If you want to title the picture for the board, do so in the first box.
Do not check the "Store Original" box
Do not click "Preview"
Click "Send"