For those of you that have Windows and want to get in on the action...
You can download a free copy of VMWare's Player, which can run Linux "next to" your Windows:
http://www.vmware.com/download/player/
You can then download a pre-built Linux to plug into it:
http://www.vmware.com/vmtn/appliances/directory/cat/45
iRex uses Ubuntu but anything Debian is pretty compatible (I use Debian's Sarge myself.)
There are even several Linux distros installed in German.