Here is an example how to do a multiple high score board using Jeff's High Score PHP Script.
You simply change the game ID on your ,mfa file.
The php script will only look for the game id you put in the Edit Box Game ID field in the event editor.
Here is how you do it.
Here is what it looks like on the database behinds the scenes.
Some IPs block 000webhost.com
if you can't see the database
Sign up for a free hosting account here, i think it takes a few hours for the setup, but once it goes thru it's fine.
For commercial games, it's probably best to use a paid host.
I use http://www.hosthoot.com/ it's like 2 bucks a month.