hii i am looking for adcenter exam, cud anyone suggest me what i need to do for that i knew $50 is charge . what is other criteria ?
I think maybe you mean the Google AdWords Professional Certification exam, which is $50. You can sign up for that through any AdWords account. Are you talking about Microsoft AdCenter or Google AdWords?
Here's the adExcellence exam site for adCenter. http://www.adexcellence.com/adex/ It should answer most of your questions.