You can access Exchange 2007 using Outlook 2007.
OIT recommends you upgrade to Outlook 2010 or 2013. It provides even greater functionality. Both Outlook 2010 and 2013 are part of the Office productivity sutie and available to you at no cost by the Microsoft software campus EES agreement.
Starting February 2015, campus units and departments began being migrated to Exchange Online, on an individual basis. If your department has been migrated, please visit the Exchange Online service area for more information.