[Serusers] Newbie need help

I have SER and SERWEB seup and working using their email address i.e user(a)mydomain.com. Now I want to assign each user the numeric number like 7471234, the caller have to dial *7471234 and the Callee party who owns this number get ring on his phone. Please help me to identify what and how to use either NAPTR, or Aliases table or Subscriber table and what should I have in the SER.CFG file that it maps *7471234 to user with user id of user(a)mydomain.com, and if user dial the number +1 212 555-1212 (PSTN), then it should be forwarded to the Asterisk server, and SER is out of the session if this is going to Asterisk. Cheers ===== Abid A. Mirza Bits & Byte Tech., Inc. 146 West 29 Street , 10 Fl. New York, NY 10001 Tel : +1 (212) 967-1616 Fax : +1 (212) 967-0672 Mob : +1 (917) 582-2290 Email : amirza_nyc(a)yahoo.com