1. Click on the "Host an image" icon (15th box from left)
2. Click "Choose".
3. Pick file you want to upload.
4. Click "Host it".
5. Copy the info in the middle window (you may have to do this manually instead of using the "copy" button).
6. Click on text box and Paste.
7. Click on "Preview" to see if you were successful.
NOTE: If you get this message -
Unable to create directories : /home/servimg/u/f38/13/48/29/08/ I'm afraid I don't know what it means so the only thing I can suggest is that you try again later. I may be the festmeister but I'm a far cry from claiming to be the forummeister.
Don't forget type something in the Subject box dude.