A few years ago I became involved with setting up the circulation system for the small mathematics library housed in the Mathematics Department at Illinois State University. Koha is a popular open source Integrated Library System (ILS) and I decided to try and set it up. I soon realized that the newest version of Koha was only available for Debian Linux and not available for Windows or Mac. Although I am a linux user, the machine I had available was running Windows. My solution was to create a virtual machine running Koha that could be used on any system. After going through the setup, I realized it might be useful to others. Moreover, the virtual machine that I created can be easily downloaded, imported, and setup within an hour or two (depending on your internet connection).
You can find my guide for installing Koha on Windows, Mac, or Linux using a virtual machine here: Koha Install Guide
The guide outlines two options to install. The first option is to install using a pre-made image of the Koha server. The second option is to install from scratch.
So far, I believe this guide has helped setup at least four library systems that I know about. If you find the guide useful, have a question, or a comment please send me a tweet or an email (herteljt [at] gmail [dot] com).