Enrolment

Hello,
I am using moodle 2.6.1 with e-mail based self enrolment and the procedure of any new student to enroll him/herself is:
1. Student fills up login form.
2. An e-mail is sent to student.
3. Student checks the mail and click on the link provided in email to complete registration process.
4. Student is automatically confirmed.

But I want to simplify the login process, what i need is:

1. Student fill up the login form with captcha to prevent bots
2. Student is automatically confirmed, and start accessing the site.

that means I dont wan't the student to check his mail to confirm the the registration process, I need student should automatically enrolled and confirmed as when he/she fills up the login form.

Please Help. And correct me if I am doing something wrong.