You need the cabextract program to extract the installer files. I tried 7zip but it didn't extract the cab properly. Instead, I used cygwin. You can get the setup.exe program from their website, but you must rename it because Windows assumes that anything called "setup" requires admin rights. I renamed it to cygwin.exe. Run that. It'll ask you where to install. I chose the cygwin directory in my home directory. When the pop-up asks you which programs to install, type "cabinstall" in the search bar. Expand the "Archive" section and make sure the "cabinstall" is not set to "skip". (Click the "skip" text until the highest number shows.) Proceed with install. This takes a few minutes.