User Registration Trial

Is it possible to trial the user registration plugin before purchase?

Ok. Here is what I am trying to accomplish. I use s2Member for my membership plugin. I use iDev for my affiliate tracking of registrations. I do not charge for memberships. So, here is the nitty-gritty:

I want to use this plugin for all my membership registrations. I use the s2Member notification system to alert iDev of a member's. I use a 3rd party call in the following format:

http://www.freeclassifiedproducts.com/affiliate/sale.php?profile=72198&idev_saleamt=5.00&idev_ordernum=%%user_login%%&ip_address=%%cv1%%

In the current sign up form, this code gets the ip address (i place it in the sign up form that s2Member Pro allows me to generate):

custom="www.freeclassifiedproducts.com|<?php echo $_SERVER["REMOTE_ADDR"]; ?>"

So, if I can make the user registration do the same thing or pass the same variable the same way, that would be perfect. I do own Gravity Forms, just not the developer. I do know that I can capture the new member's IP address but not sure exactly how to pass that.

Can User Reg fill these requirements for me?

Hey there again. Back on this topic real quick to see if there is an easy fix. According to the folks at s2member, all I need to do in order to make gravity forms work the way I need is to add this to my form:

<input type="hidden" name="custom" value="<?php echo $_SERVER['HTTP_HOST'], '|', $_SERVER['REMOTE_ADDR']; ?>" />

Now, I know the gravity forms already has a "hidden" field that I can select for the client ip address. Is there a simple way to take that field value and pass it to this somehow or rename gravity forms field to "custom"?

s2Member has a notification system that I have working with iDev as is, but I have to use their forms (which lack the options your forms have). I just need to get the ip address into this variable or whatever it is.

Thanks