Do the following:
1. Hit the post reply button. This will pull up the advanced reply screen.
2. On the post screen, look for a button that looks like a paper clip and punch it. This will pull up the manage attachments screen.
3. The first line on this screen will be "Upload Files From Your Computer". Hit the browse button. This will open a screen to the contents of your computer.
4. Find the pic you want to download and double click on it. This will take you back to the manage attachments screen.
5. Hit the upload button next to the browse button.
6. The screen will tell you it is uploading file(s). This can take from seconds to minutes, depending on file size and connection. After it is done it will show the title of the pic you uploaded.
7. You can do this for a maximum of six pics. I have to upload them one at a time. If there is a way to do multiple files in one shot, I havn't figured it out yet.
8. After you finish uploading, close this window and you are back at the post reply screen. Hit the paper clip again. The pictures you downloaded are now listed. You have the choice of inserting them one at a time by clicking on them individually or all at once by hitting the bottom button.
9. Each pic shows up in the message box as a line of text. Simply place your cursor where you want to start writing. To make spaces, use the space bar or enter key as you normally would when composing/editing somthing you are writing.
10. Check everything by hitting the preview post button. This will show you the post as it will look, pictures and all. Edit as necessary then hit submit replay as you normally would.