when i run this command i get this error

xgl-switch --enable-xgl
Warning! MD5DIR is not set: you probably called this script outside SuSEconfig...!
Using MD5DIR="/var/adm/SuSEconfig/md5"...
No changes for /etc/X11/xdm/Xservers
No changes for /etc/X11/xdm/xdm-config

could anyone help me set this up thanx