I decided I wanted to start using memcached because it's really awesome, but really struggled to get it working in Windows on PHP 5.2.3 because I couldn't find the stupid "php_memcache.dll" file I needed (at the time of writing this, Pecl4Win is down... which happens to be where the official PHP documentation tells you to get it from - great).

Luckily I came across this blog post, which not only tells you how to to install the extension (adding 1 line to your "php.ini" file) but also linked to a PHP 5.2.* version of the it. I decided to mirror it, for anyone else trying to find it:

php_memcache.dll (49kb)