Download (to .zip compressed-format), unzip (to .xslm Excel/VBA-format), allow security if required (right-click on the file in file-editor, select Properties, then click the Security-Unblock box), open the file and respond to the "Enable" prompt(s). The user can first view the overview, tabs and white-paper safely (decline "Enable"), before enabling algorithms/VBA (accept "Enable"). Compatible with both 32 and 64 bit pc's.