Installing HeeksCAD on Ubuntu is now easy.
You need Ubuntu 8.10 or later.
I tested it with Ubuntu 9.04.
You follow the instructions on the wiki on the HeeksCAD project page, http://code.google.com/p/heekscad/wiki/InstallingOnUbuntu, you only need the one called heekscad_0.7.0-svn0_i386.deb, and it just works. It even works in German, if you change Ubuntu's language to German!
