Office 2013 Group Policy Deployment

Hello,
I'm trying to deploy Microsoft Office 2013 Professional Plus using Group Policy. I'm trying to use these directions: 

http://technet.microsoft.com/en-us/library/ff602181(v=office.15).aspx

Throughout the directions, they give instructions, then follow it up by saying what to do if you're using a Windows Installer-based Office. This is probably a dumb question, but I'm confused on whether or not I'm using a Windows Installed-based Office. The setup program is a .exe file, but there are multiple .msi files in the folders.