 Your iPod can store up to one thousand contacts right alongside your music. Mac OS X's Address Book, Microsoft Entourage, and Palm Desktop can all export their contacts as industry standard "vCards". After enabling your iPod to be a FireWire hard disk, simply double-click the iPod icon on your desktop and drag these vCards into iPod's "Contacts" folder. They will automatically be downloaded into your iPod.  For detailed instructions, see "iPod Help" in the iTunes Help menu.