Hi,
I have two scripts, one
--
session_start ();
session_register("user_id");
$HTTP_SESSION_VARS["user_id"]=456;
---
and second, which is linked from first
---
session_start ();
if (session_is_registered("user_id")) {
 echo $HTTP_SESSION_VARS["user_id"];
}
---
and echo gives error Undefined index. On linux
the same thing work ok.

Martin Nedbal