sugunakar - This is a place where very helpful people will assist you with problematic code. Its not a place to get your work done or pages of code written. IMO your question asks to much. When you have some code in place and are not sure which direction to go, come here for help.
Read this if you want to know how to get a correct reply for your question:
http://www.catb.org/~esr/faqs/smart-questions.html
At a high level:
> create DB
> create a connection string
> create a login page which has a registration link for new users
> build a form for registration, place the vaidated detailt into your DB
> or validate an existing users details. If correct let them in, if not dont
Wind is your friend
Matt
www.elitemarquees.com.au