sree wrote:

Dear Chris, The staff will be able to send work related messages, share files with co workers in the team, post data to local bulletin board and use office events calender for scheduleing work.

Sounds like you want a mail server ;-) This actually sounds like a job for MS Exchange or Lotus Notes rather than Zope.

If users start sharing the files then we may allow each user to store 20Mb of files. 500 * 20 mb =10 Gb I do not require versioning for the file sharing part...

*shrugs* That's big for a Data.fs, but not that big. Personally, I'd use LocalFS or DocumentLibrary to store the stuff on the FS. cheers, Chris