Greetings. I did a standard install (e.g. let everything decide for itself where it wanted to go), and I have the following in my C:\WINDOWS\php.ini file (note that I had to set the extention_dir by hand, and that the following two lines are in different places in php.ini, but that the php_gd.dll line is already there, it's just commented out, along with all the other extension lines, unless you've uncommented them):
extension_dir = c:\php\extensions
extension=php_gd.dll
Note that the php_gd.dll, at least, comes with the Win32 binary install (or, at least, it came with mine 🙂 - check out
http://www.php.net/do_download.php?download_file=php-4.2.1-Win32.zip
(all one line) - you may/should be able to grovel through here for the .dll or .dlls you need/want, if you don't have them or can't get them any other way.
Good luck,
-drsteve