Installing PHP Patches on a Win2K box

I have a Win2K box running php-4.3.0 and would like to install the php-4.3.0 to 4.3.1 patch. I've downloaded the "php-4.3.0-to-4.3.1.patch" file from http://www.php.net, but can't find a thing on how to install it on a Windows platform. The closest thing I could find on news group posts is instructions to patch < rfc1867.c.diff-4.1.x Which fails at the patch command. The first few lines of the "php-4.3.0-to-4.3.1.patch" file are: diff -u -r php-4.3.0/NEWS php-4.3.1/NEWS --- php-4.3.0/NEWS Fri Dec 27 06:02:52 2002 +++ php-4.3.1/NEWS Sun Feb 16 16:48:27 2003 @@ -1,5 +1,8 @@ PHP 4 ... Which don't give me a clue as to what to do. Any guidance would be greatly appreciated. Thanks in Advance. Keith E.