[ubuntu] can't connect to windows printer anymore

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http://ubuntuforums.org – Hello, I have been playing around with Ubuntu at my internet cafe in Phnom Penh, partly just for fun, and partly to give people the option to boot linux. I was always able to connect to the printer that is shared from an xp machine, but now i can't. I cannot figure out why. I can connect to windows shares using samba, but the printing app can't find computers on the network anymore. I have tried using firestarter to allow connections to the print server machine, and to allow samba. I have even tried turning off the firewall alltogether. I am connected to the workgroup I don't know what el (Hardware)