Sorry, I have been trying to determine what happened but your photographs are not available. I suggest posting them to Snapfish, Photobucket, or some on-line site and link to them.
What happened is that the OP tried to copy a file from his own hard drive (the "D" drive, in fact), and post it here. That cannot work. As you said, the image has to be posted to a publically accessible Internet site, such as the ones you named, and then a link can be posted from this forum to that site.