3
           
            
                
     
    
    In Xoops_root/include/registerform.php
You need to add a required switch to the code:
as in this example:
 $reg_form->addElement(new XoopsFormText(_US_WEBSITE, "url", 25, 255, $url));  
to:
 $reg_form->addElement(new XoopsFormText(_US_WEBSITE, "url", 25, 255, $url), true);  
Note the 'true' switch at the end there.
Hope that helps point you in the right direction.
ATB
Catz