unsure about .htaccess code

First time using it and got all of that put together via a guide and from my host but I need to know if it works or not. Host dosent give support with help with .htaccess files but the servers support it. Also taking out the IP Address for security reasons even though that person did destroy my site

[PHP]order allow,deny
allow from all
deny from **.**.***.***
RewriteEngine on
RewriteCond %{HTTP_REFERER} !^$
RewriteCond %{HTTP_REFERER} !^http://(www\.)?neo-excitement.com/.*$ [NC]
RewriteRule \.(gif|jpg)$ http://www.neo-excitement.com/donthotlink.jpg [R,L][/PHP]

Also sorry if I posted this in the wrong section but the guide said it is apache code O.o