blah
there is an easier way just install easyphp
go here
http://www.easyphp.org/telechargements.php3
download easy php
then follow this guide to install it /set it up (which just tells you to make it english and setup the php.ini etc its very easy!)
http://www.canowhoopass.com/guides/easyphp/
if u need any help with it just pm me cause ive been using it for a while and know quite a bit about it
oh and also if u need a domain name i recomend using a no-ip address because its free
http://no-ip.com