Here's an extension to the topic "Installing and Loading Excel Addins with WiseScript" that makes this script even more useful. We can make the script from that tip more generic so it'll work in any version of Office. A Small change has to be made to the WiseScript. Office Version can be found in an HKLM entry under HKLM\Software\Microsoft\windows\currentversion\app paths\excel.exe Value Name : Path Please see the attachment for the script change. Related article : http://www.symantec.com/connect/article/3607/installing-and-loading-excel-addins-with-wisescript