You can download the ISO file from here, http://www.ubuntu.com/getubuntu/download. I will put instructions as to how to burn an ISO file soon. It is not hard though. You could probably figure it out on your own. If you like I could also send you an Ubuntu, Kubuntu, or Xubuntu disc. Just post a comment saying when you want and where, or e-mail me at email@example.com to give instructions as to how to give you the disc. You download the ISO file for Xubuntu from http://xubuntu.org/get. If you want Kubuntu go to http://kubuntu.org/download.php.
Other versions of Linux:
And for UNIX:
PC-BSD is a good version of UNIX
Sun Solaris 10 is also fine