This is my Conky Configuration... It is a modified version of the Conky Grey theme. (http://gnome-look.org/content/show.php/?content=137272) It includes a new network graph, WiFi information, and fits well on a screen with a vertical resolution of 768.
To use it, you'll need to extract this to your home folder, this will create both the .lua and .conky folders if they don't exist already. You can either configure Conky to look at .conky/conkyrc_grey, or you can type "conky -c .conky/conkyrc_grey" to start it up.