Yeeah baby. Finally, greek fonts and the mouse work perfectly. I even get back-forward navigation with the side mouse buttons.
In the end I added a ~/.Xmodmap. The key was to find out from where this is called, which was /etc/X11/xinit/xinitrc
In there the command was already called so my ~/.Xmodmap contents are:
pointer = 3 2 1.... you get the picture. Anyway, thanks for the help guys. All of you. Now I'll take a big brake, watch liverpool-chelsea and then try to take on dvd playback. A great big thanks once again