This is the spreadsheet used by Elimite's group to create Heroscape heroes that have attributes that can grow and persist across play sessions, sort of RPG style. See the Elimite's Leveling Spreadsheet thread for details on how to use it.
This spreadsheet requires Microsoft Excel 2007 or greater and you must enable macros for it to work.
I'm uploading it here since Elimite seems to no longer be around and the link he provided is now dead.