nice site better than mine lol
http://mostafa-soft.co.cc
the script is doing mush of a good filtering for the input tried Cross-Site Script and sql injection

but you would better find some kind of free hosting after all you use php which is free and open source so you would find mush free hosting out there supporting php and my_sql

make sure you change the path to the script folder the admin page is right there
http://24.155.56.128/comment_script_...dmin/index.php