Editing whiteboard tutorial

Hi guys,

need help here, I have taken from a whiteboard tutorial http://www.macromedia.com/devnet/flashcom/articles/whiteboard.html
to put in for my first try of making a chat room, i realised that this white board tutorial doesnt have a pencil, erase button…i only could draw arrows, and i cant erase unless i removed the files inside the shared object…can someone help me out on how to bring an erased button and pencil from other ppl’s sample to this component? been trying out for some time and reading the books doesnt make me understand, hope someone could elaborate and help me out…

2nd thing, Im also required to put on the whiteboard, an application to click and upload the background of whiteboard, anyone knows where i can get this link?

or if anyone of u seen a whiteboard that is done nicely for me to download it? please help me…thanks in advance