Hi, I own a 2TB Seagate external HDD. I want to make it a Home network drive for use by me and my family. (both Mac and PC). I already own an airport express but I believe it can only share a printer through its usb b/c it doesn't recognize the drive. What I want to buy is a router into which I can plug in my Seagate drive to share. I was looking at the prices and Time capsule isn't that much higher than Airport Extreme. Figure extra storage is not going to hurt me (I need a lot). But I can not figure out if Time Capsule can be used as a router (I think it can) AND also be able to use my external HDD connected to it to share even more drive space.