hi everyone ,
i received my invitational code, and i created my account beta microsodt ad center
when i came later i couldn't cpnnect to my account that say that this user name and password doesn't match thei data!!!!
i did like i have forgotten my password so i received my user name which is kayzar
and i received a code for pass rechanging but this code isn't working !!!!!!!!!!!!!!!
nothing to do !??? 
thanks to suzi and all of you