Samsung Delve R800

I just got a new Delve from USCC and think it's almost perfect. I had an iPhone for a quicky but did not want to switch to Att for a variety of reasons. Anyway, my question is...can additional fields be added to the contact database? I really need the address fields common to PIM databases. It would be really cool if the address fields could interact with the turn-by-turn GPS features of the phone, but just having that data would be fine.