Find Printer Driver For Network Printing


I have a PowerBook G4 on a wireless network with a Windows XP Pro machine. I have an Epson Stylus CX4600 printer attached by USB to the XP machine. I have downloaded the CX4600 driver from Epson and run the installation with the printer attached directly to the PowerBook via USB so that I could be sure to have the driver on my Mac. When I reconnect the printer to the XP machine, I can use the Printer Utility to find the printer, but the driver is not listed in the dropdown menu, and I can't find it anywhere. How do I find the driver that I had loaded when I connected the printer directly? Thanks.