Yes, change /etc/inittab from
Code:
# The default runlevel is defined here
id:5:initdefault:
to
Code:
# The default runlevel is defined here
id:3:initdefault:
Or use the Runlevel Editor in Yast to change the default runlevel to 3.
To do this temporary at boot, simply type '3' at the grub menu.
To change between the runlevels in a running system, open a console, become root and type 'init 3' or 'init 5' resp.
EDIT: too slow