The Like button on each page/URL of your site is unique. There is no way to aggregate or sum up all the Like's from different pages and show it somewhere else. Also, the Likes on your site are in no way connected to your Fan Page like count, as that's it's own URL, and again, unique.
For per-page overrides, you simply need to use the following tags on your page:
{JFBCGraph title=Better Title for Page}
{JFBCGraph description=Better description for the page}
{JFBCGraph image=http://site.com/link-to-image.jpg}
Once you add the tags, it can take Facebook a few days to see the 'new' ones and stop using the originals. You can immediately see what Facebook will see by using the Facebook Debug Tool below and inserting the URL for the page you want to test.
developers.facebook.com/tools/debug
Hope that helps,
Alex