What peripheral or hardware (besisdes a pci wireless network card) do i have to buy in order to extend the range of my wireless network. I'm looking for something that doesn't have to be connected to the modem and can just pick up the wireless signal and allow another computer/laptop to get the signal from that. so here's a crude diagram. cable modem--wireless router-------thing i'm talking aobut---------any computer. I SUCK at networking, and don't know anything except how to use a router. Thanks in advance for any help.