X-Cart forums - Facebook Website Insights w/ iFrame Like Buttom

I have the Facebook "LIKE" button installed and working on product pages using the iframe version code in product.tpl
I'm trying to track llikes using Facebook Domain Insights.
http://developers.facebook.com/docs/insights/
I followed the instructions but it did say to put the code into the "<head> section of the root webpage of a domain." but I put it in the skin1/customer/home.tpl file.
No data is coming into insights even though the code seems to have been accepted.

Is there another file that is considered to be the "root webpage?"