IF U R TALKING ABOUT STARTING AUTOMATICALLY ...THEN WHERE U LOGIN UNCLICK AUTOMATICALLY LOGIN...>>>>>>FURTHER GOTO TO PREFERNCES OF YAHOO MESSENGER..SELECT GENARAL N UNCLICK ON AUTOMATICALLY LOGIN..... . IF U DONT WANT TO USE YAHOO MESSENGER ..THN U SHOULD UNINSTALL IT..MEANZ DELETE FOR THIS DO THIS. . >>CLICK ON START . >>THN ON CONTROL PANAL . >>THN CLICK ON ADD/REMOVE. >>HERE U WILL FIND YAHOO MESSENGER... >>CLICK ON REMOVE ...IF NEED PROGRAMZ TO CLICK NEXT THEN CLICK IT