For Compiz Users
An embedded screensaver is light on memory usage, but won’t play nice with Compiz Fusion.
gconftool‐2 ‐‐type bool ‐‐set /apps/nautilus/preferences/show_desktop false /usr/lib/xscreensaver/glmatrix ‐root

If you don’t like the Matrix look, you can substitute any listed screensaver instead of “glmatrix.”
For Compiz Fusion Users:
XWinWrap is not available in the Ubuntu repositories. I […]

In GNOME GUI
Here is a method for doing this via Gnome. In gnome, choose Places | Home Folder from the menu panel (ie open nautilus). When file browser opens, enter “fonts:///” as the Location. Then simply drag the new font into the fonts directory.
Alternately, you can get to the fonts directory by going to System […]