this is weird;
when I tried to find out how to change that 'ChangeMe'-module and didn't find something useful I searched the net for my 'XIO fatal 104 error' (or something like this)
someone solved the problem by using vnc
so I connected to my SLES via vnc. 'startx' still puts out the same error, 'sax2' allows me to configure x11 but it didn't work
then someone advised me to use 'Xming'
(I'm an apprentice, so I can try out almost everything
by using xming I don't have a desktop anyway, but at least the programs I start by command open in a graphical view.
I still don't know why the GUI doesn't start but Xming solved that prob at least partially