Currently I have Broadband Cable Internet. I use a Cable Modem and a Router. The Cable Modem is in the basement. I have a Linksys Router down there. I ran an ethernet cable from the Modem to the WAN of the Linksys. I ran an ethernet cable to the Nic card of the Basment computer from port 1. I am gettomg the internet fine down there. I have run a long eithernet cable from the Linksys port two up to second floor. Here's my problem. I have two computers up there. I bought another router, a US Robotics. I thought I could run the ethernet cable into one of the ports and then hook up the other two computers using two of the open three ports. It is not working. I can only get one computer up on the internet, the second one won't connect. They will both work if I disconnect the basement computer but for some reason I can't seem to get all three up at the same time. It's the same deal with my laptop. I can use the D-LINK and it will find the US Robitics wireless router but only if two of the other computers are not connected to the router. Any Ideas on what I'm doing wrong or what I could do to make this work?