Searching a client address using business phone with ctrl k

Hi All,

I want a solution for searching clients/address using business phone with ctrl+k in the send to box of outlook 2003. It is possible for clients/users firstname, last name location, etc. I have added business phone in the search window and it is working but it is not working when I am putting same business phone number in the send to box and pressing ctrl+k.

Please help.
Rgds,
Mostafa