I've got a new external TB drive I'd like to use for backing up my "main" storage drive which is an internal TB drive, currently with about 500g on it (I need to - continue - to delete duplicates, an on-again then off-again effort) - also my 75g C drive which has about 15g on it - I only use it for applications and temp files for short term storage before I move them to the storage drive. I looked at the Backup apps on this forum, but that doesn't tell me much. Or should I maybe say I don't understand much about it. I don't know anything about "incremental" backups, or really anything else about backing up. What can be backed up from applications - I don't suppose Windows (XP sp3) can be backed up? Is there some way to save the settings so in case it goes away from some reason? Also all my FireFox settings and add ons, and some other security and a few other misc applications. During backup, it doesn't make a whole new copy of everything, does it? I would hope it would just work with files that have been changed or added? Any "beginners" guide to backing up available anywhere? I can read and learn at least. Thanks!