Apple today released Bonjour Print Services for Windows, offering tools for Apple's automatic service discovery protocol for Windows machines running XP Service Pack 2 or later looking to connect to networked printers or shared printers connected to computers via USB.
Bonjour Print Services for Windows lets you discover and configure Bonjour-enabled printers from your Windows computer using the Bonjour Printer Wizard.
Use Windows Update to make sure you have the latest Service Pack installed for your computer.
Apple notes that the update requires Windows XP Service Pack 2 or later, but recommends Windows XP Service Pack 3, Windows Vista Service Pack 2, or Windows 7. The download weighs in at 5.18 MB.