299716 Email validation thats sends..

I need a email validation php inetgrated in to this php site Im using. Its [login to view URL] Right now it has a member signup area. But before USERS get to sign in, I need to be able to validate they got a terms of service email. IE. once they get the signup email, they have to click a link to "start" there account. Currenlty members are in MYsql on linux. Need Email validation so once they get there email, they click a random link to authorize/start there account. Inluded in the email should be the terms and conditions of the site. Below is the member code signup pages. ATTAched is the code I have so far for member signup.. Please integrate email validation into this somehow.