you replace your existing modem with the adsl modem/wireless router. You need to follow the instructions for setting it up. Once operating properly from your main pc you then run the wireless set up wizard and let it copy to a floppy or flash drive. Run the floppy/fd on the laptop and with luck all will be well. Good article on just this subject page 156 pc advisor Dec 2006. I have just bought a netgear adsl wireless router and am about to install it.