My slides from the "APC & Memcache the High Performance Duo" talk are now online and can be found
here.
In the slide I mentioned that memcache is available of *NIX only, which thanks to at least two attendees I know to be incorrect. It appears that there is a working (albeit old, circa 2006) memcache win32 version, which you can find here:
http://jehiah.cz/projects/memcached-win32/
Once you install it, you'd need to compile memcache PHP extension on win32 and then you should be set.