I've been asked to help get a laptop in a shop onto broadband.\n\nThe problem, from my point of view, is that it already has a network\nconnection, to the till, and I know absolutely nothing about point of\nsale systems, and next to nothing about putting one computer on two\nnetworks.\n\nSomebody previously tried and failed to get this working, and there\nare two network interfaces on the laptop, one normal direct ethernet,\nthe other an ethernet/usb interface. The till is connected to the\nformer, but when I temporarily disconnect it and connect a router\ninstead, the laptop works fine with the router. Unfortunately, when I\nconnect the ethernet/usb interface to the router, the connection fails\nfor some reason.\n\nSeems to me it would be good if the till connected to the router so\nboth laptop/till and laptop/internet could use the same interface, but\nI'm reluctant to mess with the POS and I'm told the POS supplier's\nhelpline tends not to be very helpful. Any suggestions or ideas? The\nlaptop is running XP (don't know whether Pro, sorry) and the POS is\nRePoS (whose website has amazingly little support info).