I have a bad block. What and how do I save before reinitializing.

Tech Tools tells me that I have a bad block and need to reinitialize the HD. I have been told that all file information will be erased, while programs/applications will not be harmed, so I need to back up my User Profiles (my and my wife's). I have 2 questions:
1. What else besides my user profile should I save (or, to put it another way, what files are NOT in my user profile, and where would I find them)?
2. Once I have reinitialized the HD (supposedly the disc utility should guide me through this), will simply dragging saved user profile (from the thumb drive) onto the HD automatically reinstall all my settings? Must I laboriously redo each program's preferences?

In Disk Utility>Security options>Zero out data
Boot from the install disk > select language > DON'T select Continue > instead go to Disk Utility in the MenuBar at top.
http://support.apple.com/kb/TA24002
Don't know if this would help, but for the Mail issue, you could try "Rebuild" in Mailbox from Menu > (select the mailbox) > Rebuild
The AW problem might or might not be related to corruption from the bad blocks that weren't mapped out by zeroing out, or the data that was already corrupted earlier from those bad blocks. After you zero out, you could try re-installing AW. Realize, zeroing out will wipe your drive. If you do this, be ready to re-install everything.
Look over what Limnos wrote earlier. Zeroing and re-installing, clean as much as possible may prove to be the real solution.
Maybe the original damage was only minor, so, before you do this, you could first try repairing the drive (from Disc Utility booted from the disc, "Repair Disc.") Then, if everything is successful, when you are _booted back normally_, repair Permissions. Don't repair them booted from the disc. This might or might not resolve the problem with AW and Mail. At least, if these are the only issues you are experiencing, give this a try before taking the drastic step of a clean install, which involves a lot of work. You can always do this later if you keep uncovering new issues.
See how this goes first and post back with the results. If you take the zero out path, I think you will need to re-format the drive.
EDIT one more thing. You definitely don't want to zero the drive until you have some kind of clone/backup from which to move everything back, or you will lose all your data: mail, documents, music, etc.
Message was edited by: WZZZ

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PhilmoreEHT wrote:
what and how to turn off what I don`t need?
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PhilmoreEHT wrote:
Or am I getting ahead of myself here?
a bit, i wouldn't worry about problems until you run into any. i've recorded a lot more, with a lot less
PhilmoreEHT wrote:
5400rpm serial ATA 500Gb
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Back up all data before proceeding.
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Happy Holidays

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I have a bad block. What and how do I save before reinitializing.

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