SImply download the file, extract the files from the ZIP file and open the ExcelOMQMv5.XLA file that is in the folder. When the installation is complete you may get started. Please note that this software may be installed on a network only if each student who uses the software has purchased a copy of the appropriate Pearson textbook. The default value checked is usually correct. If you don't give the correct information the program will issue a 'compile error' when you try to use it. Please keep in mind that the question is about your Excel program, not your version of Windows.
One question in the installation is whether you have a 32-bit version of Excel or a 64-bit version of Excel. The easiest way to start the program is to double-click the shortcut key. After entering the name the installation will copy the files to that directory and a shortcut key will be placed on the desktop. The default directory is Program Files (x86)\ExcelOMQMv5 but you may change this if you like. The installation program will ask you for a directory name.
The software installs in the same fashion as most Windows programs.