No, but you can do so using the alternate install CD.

http://www.ubuntu.com/getubuntu/upgrading

So you can't do it without downloading something?

> So you can't do it without downloading something?

You'll need the alternate install CD.

You could order one from here:
http://www.linuxcd.org/view_distro.php

Or get someone on the list to burn you a CD and send it to you.