Arkroyal,
One more thing you can try after you have backed up all your data:
My Computer >> Right Click on the Hard Drive and go to
Properties >>
Tools Tab >> in Error Checking click on the
Check Now Button.
In there put a check mark in both boxes. The computer will want you to reboot in order to run the Hard Drive Checks. Reboot and let it run.
If you still have the "Clicking of Death" coming from your Hard Drive, replace it immediately.
I would use
True Image in order to clone the Drive to the new Drive.
Take Care,
Richard