session problem

Hi! I have a page in wich i register and fill the value of some session varibles: session_start(); session_register("vehiculesess"); session_register("hotelsess"); session_register("riadsess"); session_register("transfertsess"); session_register("excursionsess"); include "sessions.inc"; bit when i go to other pages and come back to it , it creates a new session ?! however i want to fill more that variables ! NB: i also discovered that when i reload that page it creates another session however when i add and click on a submit button with action =echo PHP_Self it works, i mean it no more creates another session any idea ? Thanks _________________________________________________________________________ Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com.