Hi Peter
Thanks for your reply. Good question, not using USB is down to it being a big room! The internet router is a few rooms away because of the phone line being there so I planned on having an entirely separate router and network in the office, is that what you do? If the internet router could be in the office too then it's a no brainer, cable to printer and laptop over the wireless but they can't be in the same room.
With 2 networks, will the mac use both or will it just default to the ethernet cable and not direct internet traffic over the wireless? Sorry if this is a simple question, no idea how this stuff works.
Mat