connect to oracle

Does anybody know how to connect to oracle database
from PHP using OCI8.
I'm using Oracle Server 8.1.7 with Apace1.3.12 and PHP4.2.2
Everything is installed on the same machine with WIN2k platform.
Any advice is welcome.
Thank's
Tomaz

http://www.php.net/manual/en/ref.oracle.php
http://www.php.net/manual/en/ref.oci8.php