Shoutbox

Here's my problem I have I clients/friends who want to get internet connectivity(yes they have gone all this time with out an internet connection)
the problem is that they are often moving between their two houses, and each resides in a different state. my problem is,
do I tell them to go with a nationwide wireless plan
or is there a way both lines can be billed for as one, as they clearly can't be using both interconnections at the one time, will they need to pay for 2 plans though they can only use one at a time? or is there a solution to this kind of problem where both lines are hocked up and all the usage is tied to one account for the price of one plan?