Sessions with IIS

[NeffTribe]

Hello,

I'm doing some development of PHP/MySQL on IIS. Everything appears to be working except sessions.

If on one page I have something like:
---------------------------
// initiate a session
session_start();

// register the variables
session_register("SESSION_UID"
$SESSION_UID = "Sample";

// load second page
header("Location:userAdmin.php"
---------------------------

On userAdmin.php I check the session:
---------------------------
// check for valid user session
session_start();
if (!session_is_registered("SESSION_UID&quot)
{
die ("Session not registered"
exit;
}
---------------------------

If I run this on my Win2K system with IIS it always fails. If I copy it to my ISP running on Linux/Apache it works fine.

Is there an IIS configuration/privilege or php.ini setting that I'm missing?

Thanks,

-David