I found Joomla 1.5 does not allow you to add custom html form.  I have tried sourcer and blank module. The blank module can create module box with custom html form at top of the page. But it can allow me to add the custom html form into an article. Anyway, that is simple and good, worth to try:

http://extensions.joomla.org/component/option,com_mtree/task,viewlink/link_id,3668/Itemid,35/

I have nearly reaching the sucessful point. I went to configuration.php and changed

var $editor = 'none'; The form is created, but action attribute is cut out.

Finally, I put all code into a html file and upload to the server. A menu wrapper is created to grab the URL. That is a kind of work around.