We'll see if this works. It's a nifty Flash Actionscript 3.0 sketchpad. I got the code here. It's open source from google, actually, but Henry Jones gives sense on how to implement it. However, 4/17) Henry Jones article seems to have vanished!
Here's a drawing I did before I'd uploaded it. You have to draw slowly to get decent line quality.
If it doesn't work I'll fool with it after lunch. If using firefox you have to enable popups. It really does download as a little jpeg. Maybe we should have a little contest. Tell me if it works for you.