http://live.gnome.org/GnomeScreensaver/FrequentlyAskedQuestions#head-f718251faff163b00686836433c40cb7ef726c7d
or
http://www.gnome.org/learn/admin-guide/latest/screensavers-3.html
http:// live.gnome. org/GnomeScreen saver/Frequentl yAskedQuestions #head-f718251fa ff163b006868364 33c40cb7ef726c7 d
or
http:// www.gnome. org/learn/ admin-guide/ latest/ screensavers- 3.html