The network I set up runs a Belkin N wireless router, netcomm NB5 modem, a macbook, a dell xps (with an intel wireless card) and a (very old) toshiba laptop. The problem occurs when my macbook and dell try to connect to the network at the same time. When the dell wi-fi is enabled my mac cannot access the internet at all (although signal strength is always at max). I have tried changing channels, playing around with the security settings and assigning static IP addresses. Is it the settings on the dell that I should be changing around? Any help on this topic would be appreciated!