Here are to ways that it can be done:
Put one of these script between the head tags of your sign up form
HTML Code:
<SCRIPT LANGUAGE="javascript" type="text/javascript">
<!--
var afflink;
afflink=Array("link0.htm","link1.htm","link2.htm","link3.htm");
var affno=location.search;
affno=affno.substring(1,affno.length);
window.open (afflink[affno], 'newwindow', config='toolbar=yes,menubar=yes,scrollbars=yes,resizable=yes,location=yes,directories=yes,status=yes')
-->
</SCRIPT>
or
HTML Code:
<SCRIPT LANGUAGE="javascript" type="text/javascript">
<!--
var afflink=location.search;
afflink=afflink.substring(1,afflink.length);
window.open (afflink, 'newwindow', config='toolbar=yes,menubar=yes,scrollbars=yes,resizable=yes,location=yes,directories=yes,status=yes')
-->
</SCRIPT>
The first one you must create an array of your links and use
HTML Code:
<a href="signup.htm?1">affiliate link</a>
in your page (Note the array starts counting from 0 so 1 would be the second link in the array)
For the second one use the full affiliate link:
HTML Code:
<a href="signup.htm?http://www.afflink.asp">affiliate link</a>
Hope this gives you some ideas.
bob