[CentOS] calendar

>   My manager's asked me about something that can run on our CentOS boxes
> that can connect to an (bleah!) Exchange server's calendar. It doesn't
> look like Lightening can, and from some googling, it appears that
> Evolution claims to, but.... It's got to be able to set dates, etc.
>

Exchange has a web based interface:

http://en.wikipedia.org/wiki/Outlook_Web_App