you need to register online. you can refer to links like
http://nircstudent.org/GMSCI/index.php
WIRC link is currently under reconstruction.
ICAI has enabled online payment for the fees.
Document to be submitted:
1. Xerox copy of Articleship Registration Letter issued by the Institute. Incase the articleship registration letter is not issued. Then copy of front page of Form 102/103 wherein the date of receipt stamp of the Institute is affixed.
2. Demand draft (in case online payment is not made).