php_printer.dll and Win XP

[Bob]

I am trying print labels from a networked printer. Can I use
php_printer.dll with Win XP?

Returned from the webserver:

Unable to load dynamic library 'c:/php/php_printer.dll'- The
specified procedure could not be found.

Fatal error: Call to undefined function: printer_open() in
C:\xitami\xitami-24\app\webpages\label_printer_test.php on line 13

In the php.ini:

extension_dir="c:/php/"

The actual calling lines from the webpage:

<?php
$handle = printer_open("\\\\engineering\\crib_label");
printer_write($handle, "Text to print");
printer_close($handle);

?>

From the php.net website: "These functions are only available under

Windows 9.x, ME, NT4 and 2000. They have been added in PHP 4.0.4." Do
I take this a face value?

[Bob]

Incidently I am running WinXP Pro and phpinfo() gives the following
system info: System Windows NT EDC700 5.1 build 2600