[slicendice]

Thanks for the input everyone, much appreciated

The Homeplug thing definately sounds interesting, but with regards to the wireless Homeplug adapters, what sort of range do they have? I have a laptop that has wireless built in so I'm going to need some kind of wireless interface for that, but isn't it going to sort of defeat the object of wireless if I have to carry a plug round with me and plug it in to whichever room I happen to be in when using the laptop?

Also, how is security enforced in Homeplug? I'm sure they've thought of and sorted all this but how do the devices stop your network signals propagating all down the powerlines and out onto the national grid (i.e. where someone else could pick them up)? Some kind of multiplexing?