How to set up a session variable ?

Hi Everybody, I'm new to the list and I should tell you that I'm a newbie. Therefore, I'll start right now with my first question. I'm using PHP 4.0.2 on a Win2000/IIS 5.0 machine. I get into trouble when I want to create a new session. I used on first page session_register("ID") to create the new session and a new session variable called ID. On my second page, I'm using session_register() to get back the ID. when I do at the top of the page session_register(); $ID++; it works fine. The problem is that I have to use the ID on the whole page, and I haven't got to do $ID++, the $ID variable should be set in a member function. I could set a variable called $ID in the function, but it seems to be a local variable only. I also tried with HTTP_SESSION_VARS['ID'] but it also seems to be a local variable. Could anyone help please. It is really important !!! Stéphane Cesbron Chargé du développement Internet/Intranet Groupe E.S.C Nantes Atlantique 8 route de la Jonelière B.P. 31222 44312 Nantes Cedex 3 Tél : 02.40.37.34.47