Quoting Bin Yin (byin at aracontent.com):
> 
>    We are implementing a Linux server and want to migrate from Outlook to
>    some other e-mail, calendar, task, and contact software.  Does anyone
>    have any suggestions of a software to use that has the same look, feel
>    and functionality as Outlook?  Also, do you have any advice on how to
>    migrate existing contacts from Outlook to that software?
>    Thanks

I think KMail + KPim (part of KDE) make a very good soultion.
-- 
Bob Tanner <tanner at real-time.com>         | Phone : (952)943-8700
http://www.mn-linux.org, Minnesota, Linux | Fax   : (952)943-8500
http://www.tcwug.org, Minnesota, Wireless | Coding isn't a crime. 
Fingerprint: 02E0 2734 A1A1 DBA1 0E15  623D 0036 7327 93D9 7DA3