Personal Information Managers (PIMs) rank high on most users' lists of software they use every day. If you're switching to a Mac, you might be worried about the availability of productivity software. Microsoft's Entourage for the Mac works a lot like Outlook on Windows, with only a few subtle differences. There are other games in town as well, in both the commercial and freeware category. Paul Ferrill looks at a number of options for anyone making the switch from the PC to the Mac.