[Milambar]

I would suggest running inSSIDer on the laptops, to see which channels are the most cluttered, and pick an uncluttered one.

Its worth noting, especially in a large house, that the more walls/floors there are between the router and the laptop, the weaker the signal is going to be. Had a friend once who put his wireless router in a metal filing cabinet, where it was "out of sight". He never could get a wireless signal and always blamed the router.

Ideally, the router/superhub should be in the most centeral location possible,

Also worth noting that the superhub has a dire-weak wireless signal to begin with.