Quite possible. I've already done it :) I'm trying to make a perl script to do it now so that it can be done in the future with new data sets, and with much LESS TIME. There are quite a few graphs needed, and making them is very simple ... however time consuming.

and then replace the data as needed using SpreadSheet::WriteExcel

Once the graphs are done, the program can stop. I don't need any more advance/further handling (by Excel or perl, anyway) of the data at that point.