Hello fellow linux lovers - I am a Newbie to this group.

I am returning to Linux after falling of the Wagon to Microsoft land. Would like to go back to developing on a GNU collaboration package - very mutch like cobalt cube.

Can anyone make a suggestion as to a package, app, or appliance.

Would consider packaged hardware with software. I heard a freind mention Pogo.

Needed -

Web based Email
Password protected groups w/private HTML/XML
Threaded discussions private and public
Administrative functions user administration
Perl/ CGI scripting support
File sharing

Other usable apps.
Important item is my ability to fully customize style of GUI and eliminate "shell" logos and graphics.

Any help is appreciated!

Cheers

Do you mean something like Zimbra? See www.zimbra.com for details. Check out the open source edition which is free.
If this is suitable for you download a vmware applicance from here: http://guru-host.eu/en/Zimbra-Virtua...installed.html
The above url has always an up to date appliance while a few others that I've found are broken and have a very old of Zimbra.