1) Is Time Campsule basically an Air Port with a Hard Drive? Meaning- if I have an existing USB Drive could I just buy Airport and plug my USB drive into it, and that would provide the same functionality as Time Capsule? 2) Time Capsules ability to be a network Drive: If I read this correctly Time Capsule can provide a network drive, but I can store data ONLY here (insteads of on my Macbook) or will it expect to SYNC data which is also stored someone else? I would love to get some video of my daughter moved off our iMac to free up some space. Thank you!