Turn off puplet - how?

[MHR <mhullrich gmail com>]

On my desktop at work, I figured out a way to turn off puplet (the pup
applet that pops up whenever an update for installed packages is
available).  I still get the yum-updatesd notice on my terminal, I
just don't have to mess with puplet.

However, I completely forgot how I did this.  Can anyone post the proper method?

I'm running CentOS 5.2 with Gnome 2.16 (yeah, it's old, but it's stable...).

Thanks

mhr