Ok guys i was thinking of getting a time capsule as i could do with a n router for better signal in my room and i wanted to use time machine, only that will set me back £195, with an airport express can you plug a external hard into the USB port and have it back up like time machine and also be able to access the hdd wireless? i can get a 500GB hdd for £45 so that with a £64 airport express is much cheaper, also the airport express has 3.5 jack on it which i may use sometime later for a Hi-Fi.