At work, we have an Airport Express that provides a Wi-Fi network for Patrons that come in. Our HP Deskjet 5550 is connected to it to provide it over the network for our main computer and for my PowerBook. Our problem is that it does not want to print from the PC, ever. The only way we can get it to print via the Airport Express is to reinstall the printer using the Bonjour Setup Assistant. It prints almost every time from my PowerBook. This happens with every application, no favorites... HP Web Chat Support sent me to Apple, and thought I'd try the Forums before I paid. Any ideas?