[PHP-WIN] session problem

[Afan Pasalic]

Hi,
I'm playing with session and after
<php
session_start(); 
session_register($name);
$name="afan"; 
?>

 I'm getting this warning:

Warning: open(/tmp\sess_41d3918086b66b0e71cc6a0dc5dea344, O_RDWR) failed: m (2) in 
C:\admin\index.php on line 2

What's problem?

Thanks for any help.

Afan