Once the file has been downloaded it needs to be unzipped and placed into the Reports folder.
Copy the file to
C:\Program Files (x86)\Sage\CRM\[installname]\WWWRoot\Reports
It then needs to be refenced by an ASP file in one of the sub folders (general, sales etc) using an include statement with a relative path.
<!-- #include file ="../sagecrmreports.js"-->