Help in doing something unique ..

I want to create 2 page site on WordPress, that's simple. Yeah !!
But 1st page needs be stay as it is but on the 2nd page I want that when any user registers they get a copy of 2nd page with just a link changed !!

Please give me any Idea about this !!

 

I cannot understand you. Could you explain?

 

So basically, you want registered users to be redirected to a protected page after they register?
Try this:
http://wordpress.org/extend/plugins/peters-login-redirect/

 

Perhaps you should explain what you want to achieve clearer. I'm sorry but I didn't get what you mean.