G2Image and CKEditor

I am trying to set up a new site. I've got Drupal 6.16 and Gallery 2.3.1. Things seem to work.
I decided I wanted to try the new CKEditor, so I installed that with G2Image.
I'm trying to follow the steps with installing FCKEditor.

In ckeditor.config.js I added
CKEDITOR.plugins.addExternal('g2image', Drupal.settings.ckeditor.module_path + '/plugins/g2image/');

This SEEMS to work, I don't see anything in firebug that would indicate otherwise.

I then added 'G2Image' to the list of buttons. But it doesn't ever show up. It is possible that I don't have things set up properly in g2image's config.php. (which is in the first ckeditor\plugins folder)

Am I doing something wrong in setting this up?
Should these modules work together? Is there a better alternative?
What can I do to debug the issue?

Thanks