急问！有关网上预订印度火车票！

年前去了一趟北印，在cleartrip上订了8张印度火车票，很便捷顺利，今天又想订，怎么一直会出现：
Sorry, you cannot proceed with this booking
We hate to interrupt your booking but IRCTC, our trains partner, requires you to register with them before you can go ahead. We realise this might be a painful process but we’ve tried to simplify it as much as possible.

Register for an IRCTC account now

但是注册了IRCTC account，不知道怎么继续了？请高人指点！谢谢！
急！急！