Help with this forum profile link platform

Hello I have recently discovered a related website that provides you with a link in the profile and lots of bio space to post a spun article on.
Anyway I was wondering if anyone could help me with creating the platform for this site, this is actually using a wp memebers plugin or something that I have actually used my self but I have forgotten its name... but what I do know si that tons of sites use this.

anyway if some one could help me out translate this into working code then that would be epic thank you!

http://singletrackworld.com/singletrackworld-registration/


registration form = "signup_form"

Username ="signup_username"
email ="signup_email"
password ="signup_password"
password confirm ="signup_password_confirm"


Spam captcha (simple easy one to beat with gsa captcha breaker) the image is found in div class "captchaSizeDivLarge"

Captcha  input answer ="captcha_code"

Anti spam question that never changes from answer stem = "stw_mtber"

sign up button =signup_submit


activation email

Thanks for registering! To complete the activation of your account please click the following link: http://singletrackworld.com/activate/?key=3bb179960d83b7b7

Singletrack Magazine <website@singletrackworld.com>	4:32 pm (1 day ago)
to me

If sign up is complete look for "Sign Up Complete!" on same page.

then go to url

http://singletrackworld.com/members/YOUR------USERNAME/profile/edit/

edit profile form = "profile-edit-form"

about field name (can add very long text in here) ="field_10"

second about input (can add very long text in here) ="field_11"

website url input = "field_2"

submit button = "profile-group-edit-submit"


check http://singletrackworld.com/members/blshshs/profile/