Configuration Email Registration

Hi,
I would like to know how to change the default mail which is sent to the user with the password.
In addition I would like the register form doesn’t link to the wp-login.php page to login in, and just wait in the same page until the user have the password and could use the login form.

Thank you.

http://ww.wp.xz.cn/plugins/wp-sliding-login-register-panel/