for uploaded pictures:
1) make a new room on pleonast
(go to your home room, click "edit room" then click "add new.")
2) upload a picture for that room
(in the "room picture" area, click "Browse...", find a picture on your computer, and click "change picture."
3) the room number shows up in square brackets in the "your rooms" list. The newest room is at the bottom. (you can also get the room number from the URL bar in your browser, it should have a part at the end that says, for instance "http://pleonast.com/room.php&roomID=2367"
4) the code to put that picture anywhere on pleonast is:
<img src="/pictures/ROOM_NUMBER.jpg"> (where ROOM_NUMBER is the number you got in step 3)