I have passed IIT JEE Mains and I have passed it and now I want to get the details of fee payment and the important dates of registration of IIT JEE Advanced so can you provide me that?

As you want to get the details of fee payment and the important dates of registration of IIT JEE Advanced so here is the information of the same for you:

Important Dates:
JEE Advanced Online Registration 04 May 2014, 10:00 AM
Last Date to Register for JEE Advanced 09 May 2014, 5:00 PM
Pay Registration fee for JEE Advanced 12 May 2014, 5:00 PM
JEE Advanced Exam Paper I 25 May 2014 9.00 - 12.00 A.M
JEE Advanced Exam Paper II 25 May 2014 2.00 - 05.00 P.M
JEE Advanced Results 19 June 2014
Online Choice Filling of IITs 20 June 2014
Architecture Aptitude Test (AAT) Registration 20 June, 2014
Architechture / Design Aptitude Test 26 June 2014
Architechture Aptitude Test Result 29 June 2014

Registraion Fee:
Rs.2000/- for General GE students.
Rs.1000/- for SC, ST, PD students.
No Fee for all female (girl) students.
US $220 for all students appearing from Dubai centre.

How to pay the JEE Advanced Registraion Fee:
Login to JEE Advanced website and Register for JEE Advanced exam.
On completion of registration process the bank challan will be generated, Print the generated challan.
Go to any branch of State Bank of India, pay the fees with challan.
Get the counterpart of the challan endorsed by the bank.