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How to back up a / partition with DD?

Hey folks: looks like I got to reinstall linux, so I thought I'd take the time to work out how to back it up.

My system specs are:

Drive #1 80g Windows XP

Drive #2 200g HD
    Partition #1 Grub, ubuntu 9.10 my / in ResiserFS
   Partition #2 /Home ReiserFS
    Partition #3 /Storage ResiderFS

Drive #3: 320g harddrive
    1 partition, /Archive ResiderFS

What I'd want to do, is

a) image the / partition to any other partition for safe keeping,
b) boot with SystemresscueCD
c) Us a command to restore the image to / partition, make it bootable, then also restore grub.

Does DD do this? If so what is the command(s) to back and restore so I could do this exact thing I outlined above? the other partitions arn't a problem, since I back them up to an external HD.