The AirPrint Windows Installer is a third-party software that makes installing AirPrint on windows computers much easier. It is compatible with Windows 7, Windows Vista and Windows XP.
AirPrint is a service originally created by Apple that allows users to print over Wi-Fi from their version 4.2.1 iOS devices onto another Apple computer. A version for Windows has been available for those with an iOS device, but not an Apple computer, which requires a fairly complicated install through Window's Command Prompt. A much simpler installer version was created by a third-party user with no Apple association, which streamlines the process and makes it as easy as installing most other forms of software.
The install requires the user to have version 10.1 of iTunes or higher on his computer and to have the printer setup as a shared device on his PC. The Printer and iOS device must also share the same Wi-Fi connection, the user must have full administrator privileges. A guide for installing the software via the installer is located at Jaxov.com.
It should be noted that some people report having trouble getting the Windows version of this service to work on their version 5 and up iOS devices.