I need a MS Word template creating which allows us to mail merge graphs

General information for the business: Marketing agency looking to mail merge graphs into MS Word from MS Excel
Industry: Internet/Software
Description of excel work: We need a Word template creating which mail merges graphs from data contained in an excel document.

Something like this: http://www.gmayor.com/mail_merge_charts.htm

We need a template which we can populate by changing the excel data each month.

I have attached both the word document template (the graphs are what need working on) and a copy of the excel data which needs to be merged as a graph (the data we require merging is highlighted)
Design and target audience: N/A
Extra notes: This should be a template which we can reuse on a regular basis by updating the data in excel.

If there is another way of achieving this we are open to suggestions.