Changing autologin to Window Maker

I installed tumbleweed with LXDE as the desktop environment, but it’s evidently too much for my old pentium 4, however I’ve looked around YaST and other options but I can’t find where I could change the login to the lighter Window Maker.

YaST -> System -> /etc/sysconfig Editor and under Desktop Window Manager DEFAULT_WM or edit the /etc/sysconfig/windowmanager file.

Thanks, that did it, windowmaker doesn’t show up in the drop down menu, but writing it without the space does make it the default window manager.