in reply to passing parameters to CGI script

Pass it in as a hidden field in your form, see Creating a hidden field

Update: sorry, you said a hidden field didn't work. This is the normal way of doing this sort of thing. Please post your attempt to use a hidden field.

--

Oh Lord, won’t you burn me a Knoppix CD ?
My friends all rate Windows, I must disagree.
Your powers of persuasion will set them all free,
So oh Lord, won’t you burn me a Knoppix CD ?
(Missquoting Janis Joplin)