Just to clarify, Bonjour Service is the protocol Apple uses to detect when you plug your iPod (and some other stuff like printers and cameras) into your USB. Considering that Windows will spot iPods with or without the service running it is nothing but a waste of resources, even more so if you don't actually have an iPod in which case it just uses a few meg of memory waiting for something that will never happen.
iTunes installs about half a dozen of these pointless services that run on start up for no reason which can be stopped.