cycle-class behavior

[dataangel <k04jg02 kzoo edu>]

Can I just call cycle-class without binding it to a key? I'm trying to 
get it so when I hit a hotkey it either launches a new Eterm, or if one 
is already open switch to it, or if one is already open and focused 
cycle to the next open one. However, when I call cycle-class by hand 
nothing happens. When I do it in sawfish-client I get an error that it 
can't find it even though it's in the sawfish manual. I tried (require 
'cycle-class) but that didn't fix it (although the error went away). 
Ideas? :P