It's a postscript printer (Postscript 3, to be exact), so there are no special drivers. You will need to install the PPD files (Kyocera's installer is a `one-for-all package' that will try to install PPDs of most of their printers in many different languages, and this is bigger). If you want, you can extract the PPD and install it on your Macs `by hand.' Or, if you're lazy, you can use the generic Postscript driver, but I'd recommend to install the PPD.
They also have a scan application, although I've never used it.