http://www.google.com/ig/directory?hl=en&type=themes&cat=causes&dpos=themes

After you add a Theme from the Themes For Causes section, it adds a donate link to that cause on your iGoogle page.
http://farm4.static.flickr.com/3051/3096415621_d7b4e92a3f_o.png

http://farm4.static.flickr.com/3058/3096421647_43cd852535_o.png

not on the one i am using, the 'jane goodall' one.

If your using the special top tabs link, http://www.google.com/ig?hl=all , you will not see the donate link. But if you use the normal language link http://www.google.com/ig?hl=en you will see the donate links.

Official Post

http://googleblog.blogspot.com/2008/12/creating-change-with-your-homepage.html

So how does one submit a theme for the Cause Themes? I created a theme for a non-profit organization that I work for, but there wasn't any place to choose to add it to the causes. I'd appreciate some help.

It might have been an invite only theme submission. I tried looking at contact info for all of the themes for causes and they all point to the same URL:

http://www.google.com/ig/directory?type=authors&url=fidel%40cubancouncil.com

It seems iGoogle has a bug when trying to contact a theme creator. They all point to fidelcubancouncil.com.