how do i add a custom address field in my contacts in outlook 07   

i am exporting my contacts list to excel so that another staff member can 
undertake a mail out, and have had some strange characters appear in the 
resulting excel s/sheet. How do add a new address field so we can have the 
address info appear on the s/sheet in a custom text field?

date: Mon, 21 Jul 2008 20:29:00 -0700   author:   Gregl