First click on "post reply" don't choose "click reply". Beneath the message board and smiley's you will see the words, "Manage Attachments." Click on this, and it will allow you to "Browse" through you compute and select he pictures you wish to upload. After you select the pictures, click on "upload." When that window closes, your pictures will be attached. Here's a thread with more information.
http://www.yorkietalk.com/forums/yor...orkietalk.html