unable to open downloaded applet
I have just finished loading Ubuntu on my desktop and it's running GREAT! I tried to download the zweather applet. It downloaded but when I tried to open & install it I got the following error message: /tmp/zweatherapplet-1.51.tar-2.gz could not be opened because the associated helper application does not exist. Change the association in your preferences.
I do not understand what that means or what to do: any ideas? Thank you, David