S.O.S. Need Help!

Since Apple iTunes includes no Customer Support phone number that I can find on any of their websites, I need help.

1) My hard-drive crashed.
2) The backup was several months old. There were tunes I'd previously purchased backed up, many that were not.
3) There were songs that I'd purchased, that had not been backed up.
3) The Apple Store does not recognize the new drive, so will not download the purchased-not-backed-up songs to the new drive.

Thus:
a) How do I get iTunes to recognize the new hard drive?
b) If it recognizes the new hard drive, will the purchased-and-backed-up songs disappear?
c) Will these all disappear off my iPod the first time I sync?

Can someone please give me instructions on what to do?
Or, can anyone give me a phone number for Apple that they can talk me through what I assume must be a simple process.
I am surely not the only person this has ever happened to.

And, what the heck has happened with LiveJournal? I am getting just the basic version - no pretty graphics. Is this because of the hard drive issue, or is this an LJ Issue?