hi, there's the situation: i constantly travel between two apartments, each one with its own wifi network and internet connection, and i need something that just joins the wifi network and shares the external drives eventually connected to it. my setup is a macbook air "on the move" and an iphone 4s, always with me, two imacs (one G4 and one CD2 aluminium imac), a vaio laptop and a ps3 in one apartment, and another ps3 in the other one. now, the questions about the time capsule: - can this thing join different networks without reconfiguration, or should i re-join the wifi every time i change apartment? - can the time capsule just share the content of an external drive (hfs-formatted) both on windows and on mac? and for the ps3, that uses DLNA? - can the time machine backup the content of the external hard drive in the TM internal hard disk? how? i don't need the time machine thing, i don't keep my files on my macs, all the data is on external hard drives. thanks!