Is there a thread or link someone can post on here as to how backups work? I purchased a LaCie d2 Quadra 301110U 500 GB eSATA/FireWire800/FireWire400/USB 2.0 External Hard Drive (on the way from Amazon) and I am curious as to how it "works". When do I backup? Do I backup everything?? If my computer "crashes", if I have the data prior to the crash backed up do I just reinstall? Any help you can provide would be much appreciated!