How to Comment to this Platform

I have found this site:

http://www.iherbreferralcode.com/entry/iHerb-Coupon-Code-2

how to post a comment on it?

I have tried to make my own script, but i am confused how to click the submit/post button

[STEP1]

form name=??

name=%anchor_text%

password=%password%

homepage=%url%

comment=%Comment%

set unknown variable=%leave%

form name=*Save a Comment*

Anyway just made an engine out of this as it will not work the way you want. Just have a look in the upcoming version to see how its done

ok, thanks, I will wait for the upcoming version.