Login to your e-mail account and go to the options menu at the top right hand side of the page, and then click on Delegated Administrator (this is located towards the bottom left hand side of the page):

Next, you will need to login to the Delegated Administrator page.  Use your normal user id and password (the same one as your e-mail login):

Now click on the Mail Delivery Options on the middle left hand side of the page.  UNCHECK the POP3/IMAP4 Mailbox and CHECK the Enable Forwarding box.  After this is done you can type in the email address in that you would like to forward to under the Enable Forwarding box:

Finally, make sure to save all of these changes by clicking on the Save button in the bottom right hand corner of the page.