Mac can't distinguish between identical Zebra printers with EPL2 driver...?

[Colin]

Hi

I have two Zebra TLP3842 label printers I want to attach via simple wired USB using the EPL2 v1.3 CUPS driver on an iMAC (OS X 10.5.8). They will be printing to different label types so are effectively different printers from my perspective. Apparently, the Mac sees both printers as identical so, although I can set a print queue up for one, I simply get the "A printer queue already exists, etc, etc..." pop-up when trying to do the same for the other. Is there a way of changing the names of the printers so the Mac can distinguish between them? I read somewhere that the Mac ties the name AND serial number together to get a unique printer name but that doesn't seem to be happening.

I know I can change the name of the printer after I've chosen it from the list of printers the Mac 'sees' but this doesn't change the 'orginal' printer name in the vailable list.

Not really a CUPS question but any help/advice gratefully received.