If you have Optional Life Insurance from Delta, it changed to MetLife for 2008.
You will most likely need to go to the MetLife link below and update/enter your beneficiaries. It was supposed to be done automatically but a number of employee's and retiree's accounts were not updated.
Begin the process by entering the word Delta on the first screen that appears. You then have to establish an account. Your employee number is the one with the zeros added.