Flash at its finest!
http://southpark.gamesweb.com/flash/sp-studio.html
Here's me:
Once you've done a picture, if you want to display it here you'll have to take a screenshot of it and put it on some webspace (I meant to explain how to take screenshots in my 'computer illiterates etc. take note' topic, but I fergot). Press the 'Print Scrn | SysRq', which should be located above your 'Insert', 'Home', 'End' and 'Delete' buttons. Open Paint (or whatever), go to Edit, then Paste, and cut off all the bits you don't need (the Print Scrn button captures an image of the entire screen, so you'll want to lop off the toolbars and the rest of the webpage, etc.). Then jam it on some webspace.