Kagey,
First off, a lot of useful info can be found in install.txt, which should be in your PHP directory. "./" is shorthand for the current directory, so yes, it's probably the directory that PHP is installed to. install.txt tells you to set extensions_dir to either the directory where your extensions e.g. the files that start with php_ and end with .dll). For me that's c:\php\extensions. If php_gd.dll isn't in there, then you'll have to download it. Unfortunately, I don't know if there's anywhere on PHP.net that lets you download individual files, so you may have to download the entire zip package here: http://www.php.net/downloads.php . And pick out the files you need. Good luck.