how do i add a screensaver?

[Bubblicious]

im running LM 7.2 with gnome as my wm and i need to add a screensaver to my list of screensavers but dont know how.
i've already dL'ed a rpm version of the screensaver and when come to run it, it runs in my terminal screen instead.

how do i get it to run as my screensaver?

Thanks,
Bubblicious ;)