I looked and looked, but could not find a custom stats package on your site.
In the future, however, I plan on using a different graph system, this one uses JPGraph, which you can download freely at: http://www.aditus.nu/jpgraph/
JpGraph is released under a dual license. QPL 1.0 (Qt Free Licensee) For non-commercial, open-source or educational use and JpGraph Professional License for commercial use.
I?m going to use a graph interface that is GPL, and looks MUUUUCH cooler.
That said, I would be interested in seeing how you used the stats on your site,
I had to remove the link above as it did not go to the location stated in the text.