A sample I made quick (not sophisticated) with the affiliate code example provided -- try it.
(My concept design was as a popup or popunder -- you can design it as you wish.)

Caution: you need to generate your own api key it is embedded in the script available for your use in the ACWM affiliates area.

Code:

<input type="hidden" name="api_key" id="api_xlovecam_key" />

The Registration API tool links directly to the XloveCam.com site.

The API registers your referral as a member with your affiliate ID. Any purchase or future purchase is commisionable to you.

This is a PHP script -- the script and its form could be used as a PHP include also.

ACWM index page (sign-up, etc.)
http://www.acwm.biz/?&o=gfybg122011&t=1048730