Getting Osx to recognise two identical printers

I have two identical printers, the Epson R300 to be precise. My problem is getting the mac to recognise that two printers are connected at the same time. I go to Print Center > Add Printer. It sees that there are two printers but when you click Add only one comes up. At the moment I can only print on one at a time and I bought the second to speed my work up. I'm using OS 10.2.8

If anyone knows a solution, it'd be great!

Make sure you install them as usb and not zeroconf. I'm not sure if rendezvous or epson usb are options in jaguar, but don't use them.
Name them different names.