Write a script that will
  1. download the base page from http://www.xkcd.com.
  2. find the image for today's comic (it will resemble src="http://imgs.xkcd.com/comics/...).
  3. download the comic to a file (use the -channel option to the ::http::geturl command).
  4. create an image using the freshly downloaded file .
  5. display the comic.