About the MAC addresses, you shouldn’t need to do that, but it would give you a decent bit of added security. Just giving each router a diferent SSID will do, as that will effectively make it appear like two separate networks, and the laptops will only use the one you tell them to. you can set the order of preferred networks on Windows, so that the laptop will always try to connect to the one you want first and then you could also have them join the other network only if/when it’s main one becomes unavailable.
still, this all seems like a little bit of overkill, unless you have two stories on your house and want better coverage.
As for all the issues people are having with wireless, i must be lucky for living in the most technologically backward first world country, Australia.
Here in Adelaide, there’s usually an average of just one or two wireless points per suburb, so interference isn’t a problem… though i have never ever had problems with the microwave or phone interfering. i suppose i’ll discover all the conflicts when wireless actually begins to become popular here, but until then, i use my wireless all the time even though the lan cable and lan PCMCIA card is close handy at my desk.
It does make it easier to move around the house though and we rent. i just grab the power supply and the notebook, unplug everything else and go anywhere in the house or back yard, all the while my bit torrent download happily continues uninterrupted.
the only time i ever switch over to the 100mbit card is when i want to transfer a CD image or something.
For laptops it’s good. i get an average ping time to my modem of 2ms, and most traffic between the pc’s is game traffic or documents. i would never put wireless on a desktop pc however. there’s just no point