I would like to use Time Machine to wirelessly back up three different laptops using an Airport Express. Hopefully, I can connect a LaCie 1.5TB Quadra D2 to the Airport Express. Is it possible to do this? I actually own two of the Quadras and would like to have them mirror each other just for redundant back ups (recently lost a hard drive so have learned my lesson). Can anyone offer some insight into how this might be done and whether they've had any success with it? Also, we are looking to buy a MacBook Air and would like to use the Quadra to store our pictures and music files. The MB Air would only be used at home, so we don't really need to store too much on the small hard drives that are standard. Can this be done wirelessly as well? Thanks for any advice you can offer.