You'll probably want to set up playlists to sync, instead of just syncing the entire library. You could even use comments to mark each song as for either iPod A, iPod B, or both, and just have 2 smart playlists.
on the latest itunes, you click on the itunes icon so that its blue and you hold i think the shift key for windows and the option key on macs. then you hit enter. just hold down shift or option while you open itunes and it should ask you to make a new user or something
With my iPods, I just make a playlist for each one. Go into your iPod under devices in itunes and just check to sync a different playlist for that iPod.
With my iPods, I just make a playlist for each one. Go into your iPod under devices in itunes and just check to sync a different playlist for that iPod.