Hi All,

I'm creating registration page where a page is having
12 fields.
the process is when user fill ups all fields and clicks the submit button,
it should connect to db and check whether user name is already exists or not and display appropriat msg.
but problem is after checking the user name availabilty, I redirect page to registration page but all fields gets blank and user has to re-enter the data.
so in order to retain registration page data other than username , what I would do?
the condition is user should get msg only and after filling up all details and hitting submit button and page should not reload.
do I have to use another tech. in php?
how would i do that? do i need to use Ajax? I don know anything about it..please help me out...