Database Webform Session

Hi,

i have a database webform and i would like to use the sessionstate, but it is disabled when i access HttpContext.Current.Session. I have created a SSP and i have enbled the session state module, database session, etc.. but i can not access the Session. I can not use the Asp.Net Cache, the session is per user.

?How can i use the session?

Thanks and sorry for my english......