trans id problem

I must configure a site to not use cookie at all. so i have made a directive in the .htaccess file to disable cookie and use only trans id: php_flag session.use_cookies 0 php_flag session.use_trans_sid 1 i have a big problem with form with method post. the php correclty add the hidden session variables but it seem that it does not arrive to the page. if i put method= get in the form it works, but i cannot do it, and i really need post method. There is some known problem about that ?