Windows 7 - wireless networking 2 houses

I need to pick some brains with this one

I'm making a sale to a family friend with a new HP 610 notebook with windows 7
so they have there current setup of 3 xp machines and one running windows vista home premium.
now the one house is where the adsl router and the vista machine are
what i'm thinking of doing for them is adding a wireless access point/ booster into the other house with the three xp machines. this house is also where the windows 7 laptop will mainly be.

Am i on the right track adding the wirless booster/access point to the house and is there anything else i need to take into consideration

distance between where i will place the point/booster and the router is 20 metres
all 3 xp machines have wireless G capability
the router is a netgear with wireless N
the laptop has wireless N
the vista machine is already on the network wirelessy

any help would be hot!!!!

Prozac

im just checking up you migtt get more response if you gave them a better picture of what goes where. I think ppl are having a hrd time with it

Ken

I would do this with two N1 category routers, one used normally as a router and second as a repeater. An alternative is to replace the router with a N1 device and use N+ WiFi USB adapters in computers located in second house.

Because of very positive user experiences I have, I would recommend Belkin N1 Vision Router(s) and Belkin N+ USB adapters. My laptop finds our home network still about 180 metres away, terrace of our local pub where I sometimes sit with my laptop using my own network. I have the above mentioned N1 Vision at home and an extra N+ USB adapter to use when the laptops own WiFi NIC can not find the signal anymore.

Good luck!

Kari