The easiest, fastest way to get up and going with your KUCI email is by going to http://webmail.kuci.org/.
Webmail offers address books, spell check, multiple languages, attachments, and many other features. It's also set up to be secure (that's what all those boxes are asking when you first hit the site) so that no one can snoop your connection and see what you're doing over the net..
If you are interested in other methods for checking your email (using Thunderbird, Apple Mail, etc), check the "Help" section in webmail. There's a link in the top right hand corner which will walk you through all of the steps.