Trying to hook up and run an Epson Stylus Photo R300M, which has only a USB connection to the computer. Using CUPS for my printing software. OS is Debian stable. When I try to tell CUPS to send a test page, it says it can't access /dev/usb/lp0, that there is no such device. Of course, the /dev/usb/lp0 file is actually there. I'm at a loss on how to operate and test USB devices. Is there some software that manages this stuff, or certain modules which must be present? Paul