No default area code

[Heidi Hunt]

I am using Outlook 2000 on Windows XP. Recently, I
noticed that when I enter a new contact's telephone
number, my area code is no longer inserted by default. I
am not aware of making any changes to Outlook, and I am on
a stand alone computer. I have not found any place in
tools to correct this problem. What am I missing????

Thanks in advance,
Heidi