Sessions DO NOT WORK !!

Hi,

I need to make sessions work in my local machine .. I'm using Apache 2.0.49
on WINDOWS XP PRO.

my php.ini sessions section is

session.save_handler = files

session.save_path = "C:\php4\tmp"

session.use_cookies = 1

session.name = PHPSESSID

session.auto_start = 1

session.cookie_lifetime = 0

session.cookie_path = "/"

session.cookie_domain = "localhost"

session.serialize_handler = php

session.gc_probability = 1
session.gc_divisor     = 100

session.gc_maxlifetime = 1440

session.bug_compat_42 = 1
session.bug_compat_warn = 1


I tried everything and sessions still not working, and I don't know what is
worng .. help will be appreciated.
Thanks in advance