PHP Part: http://magnet-dev.org/thread-10047.html
Nginx Part: http://magnet-dev.org/thread-10018-post-10294.html
FYI, that part for PHP-FAST cgi in the nginx config will work with the PHP tutorial.
After testing and whatnot, Both running together used about 11mB of RAM and I noticed a slight speed increase in PHP compiling. = Faster page loads.
Enjoy :).