How to Move from 1 drive to another?

[Jonathan Wheelhouse <wheelhouse@exemail.com.au>]

Hi

I am running Debian unstable on a 30GB drive (IBM Deskstar 75gxp)
using ext3.  I recently bought a 120GB drive (Western Digital WD1200).

The family have 5 accounts.

What I would like to do is to make the 120GB drive the main one (using
ReiserFS) and use the 30GB drive for data.

So, the plan is to install (via the sid installer) Debian on the 120GB
drive.  I know
- to install the current packages I've got I can
install them via dpkg --get-selections|--set-selections
- use /etc/* file as configuration for new drive

My question is - what is the easiest|best way of copying|moving all
the accounts and their data across?  Do I simply have to recreate the
users on the new drive and then copy across their home drives?  Or can
I just rely on everything being set up OK if I just copy across
/etc/passwd and /etc/group.

Thanks in advance
Jonathan