still using
<form action=http://refer-admin.ccbill.com/signup.php3 method=POST>
then change it! check the signup its prolly down, just enter an existing affiliate code and try to retrieve the data, the new url is
https://affiliateadmin.ccbill.com/signup.cgi
... not sure if theyre gonna turn the old sys off forever but its down now as i type this...