passing data to the session?

[netfrugal]

I've tried to use this contribution, and so far I'm not successful with passing any data to the session variable:

 

http://www.oscommerce.com/community/contri...,referring+site

 

Does anyone know how to pass extra data to the session, and call that particular data for passing to the db?

 

Any documentation available for newbies for sessions?

 

thanks!