Get sender ( myself) for a sent item   

HI,

I am trying to backup my sms on a windows mobile device and I am using 
MAPI to read messages.
In the case of sent items, I would like to know if I can retrieve the 
sender name(ie my telephone number) by using a MAPY property or do I 
need to get telephone number by another API ?

Thanks

date: Wed, 30 Jan 2008 14:02:56 +0100   author:   mosfet