Newbie

Hi all I downloaded the oscommerce online shop. I have no experience with php. I installed yesterday php 4.3. Just my question: I get this error if I call the startpage of this shop: Warning: Unknown(): Your script possibly relies on a session side-effect which existed until PHP 4.2.3. Please be advised that the session extension does not consider global variables as a source of data, unless register_globals is enabled. You can disable this functionality and this warning by setting session.bug_compat_42 or session.bug_compat_warn to off, respectively. in Unknown on line 0 Thanks for any information Ilyas