JohnDuncan:Yes, the Sonoses just talk to each other without having to join an existing wireless (or wired) network as Squeezebox or Airport Express would.
That's not strictly true, you know why one Zoneplayer must be wired? Sonos still needs something to give it IP addresses, each zoneplayer requires an IP address, which normally comes from the router.
If your dad's music is on a PC you could set up a DHCP server on the PC then plug one ZP into the PC, that will fulfill that requirement, however internet access is required for the zoneplayers to register themselves with Sonos during the initial setup. I don't know whether that's a stage in the setup you can skip but I doubt it, the players will also look for the latest version of the firmware when they're first setup. This IS a requirement as there's no guarantee all your zoneplayers will have the same versions out of the box and they must be running the same firmware level.
There's nothing to stop you taking the lot to your place and doing all the setup through your router/broadband though and then shipping it all over to your dad's place.
Does he have a budget in mind? Five zones is a lot to fill...
Yes, you're looking at 2 grand there, depending on how many controllers you need. The ZP120 is an eyewatering 400 quid now! Even I have to admit that's getting pretty ludicrous, especially as the S5, which is basically a 120 with added speakers, is 50 quid LESS!
Hmmm, BU250 bundle at £800, x2, plus 400, yup £2000 for 2xZP90, 3xZP120 and 2xCR200, if you don't want 2 ZP90s then it's a bundle plus 3x120, which is still 2 grand and you've got one less controller. Like I said replace one or more ZP120s with an S5 and you'll shave 50 quid off each one. Still a lot of money though.