Lets say that the address book is just a convenient one stop container where
all the different address types hang out, for instance my address book shows
my contact folders, my Global address list and my public folder contacts. I
would be interested to know how you used the Find function of the Address
Book to locate a phone number, anyhow the add-in Lookout will index items
with phone numbers for more on lookout check
http://www.lookoutsoft.com/Lookout/download.html