I see 2 models of AirPort extreme currently listed in the Apple Refurb store. http://store.apple.com/uk/browse/home/specialdeals/mac/mac_accessories Are either of these the current model being sold new by Apple for £142.00? If so then £41.00 is a pretty decent saving! I'm looking to setup a home network with a USB hard drive connected to the extreme for centralised access to files over the network. So as well as the base station, I need to by 2 Extreme cards, one for my old G5 and one for my Mac Pro. Can someone please confirm if these are the correct cards for my G5 (http://cgi.ebay.co.uk/ws/eBayISAPI....455968&ssPageName=STRK:MEWAX:IT#ht_500wt_956) and Mac Pro (http://cgi.ebay.co.uk/ws/eBayISAPI....157588&ssPageName=STRK:MEWAX:IT#ht_1211wt_941). Do I need to purchase a separate antenna for the Mac Pro? Also, will my G5 be capable of g or n protocols or will it be limited to b? I'm pretty new to all of this!