77688 Password Protection Script

Hello, I have a password protection script that I need. I have members that have signed up for a members area, and right now, it is accessed online from a URL that anyone could figure out:( I need the password page to verify that the member is actually a member, and they need to be able to enter their username, and click send, then have a randomly generated password emailed to the email on file. Please ask questions in pmb, and stick around, I would like to choose someone for this project quickly. Thank you.