I have 3 laptops on a wireless network. At times the signal fades to 1 mbps then goes to 11 mbps, 2, 5.5 is popular. It happens on all the computers. Whenever I travel, it happens on all the computers. I would like to know if there is some way to keep the mbps on the high end? I have "B" and "G" cards, some routers I know are "B" and others I don't know about. I'm not having too much problems getting on the networks, but staying with a good signal is tough. Any suggestions.