am not sure about the palm treo source. but in palm cobalt sdk, there is a library \SDK\samples\libraries\IdLookupLib that you can use for this purpose.
the API to call is IdLookupLibSearchPhoneNumber(IdLookupLibSearchPhoneNumberType*) if you can't find the above mentioned API, then you can just have a SysAppLaunch to addressbook application with "AddressBookIdLookupLaunch" launch code hope this helps jing -- For information on using the PalmSource Developer Forums, or to unsubscribe, please see http://www.palmos.com/dev/support/forums/
