I already have a 2nd gen iPod which I use with my Powerbook (OS 9.2.1, ipod f/w 1.3). Now I want to get another iPod (possibly a 1st gen 5 gig) for my wife. She will be using the same iTunes library but not all of it. How do we go about doing this without messing up either the iTunes library or any of the iPods? I have mine set to update automatically; I guess I should have my wife's set to update manually, but is this enough? Is there something I should be careful about? Thanks in advance:)