Thunderbird offers an email only solution. With Tunderbird you will not be able to sync any Contacts or Calendars from Exchange. Thunderbird is not recommended and support is limited to the server information below.
You will want to setup a new IMAP configuration. The following server information will be needed:
Incoming Server: exchange.uccs.edu
Outgoing Server: smtp.uccs.edu
UCCS Username and Password (please note that your password can not be expired)
Should you need additional help with setting up Thunderbird please visit Mozilla's website : http://www.mozilla.org/en-US/thunderbird/