Have you tried and found problems? It should just work, so long as the admins have enabled access over the internet...
I have an Outlook Web Access account at work, and I have no problems using it in Firefox on Linux. You do get a simplified interface, compared to the one you see in IE on Windows, but it is quite usable.
Last edited by Robhogg; 04-02-2009 at 07:55 PM.