How to make an Online High-score?

Hey everyone!

I have a question concerning high-scores.
So I’m running an internship at a museum right now and I have made a game that currently saves high-score data through a SharedObject. However, they would rather have it stored online so people can see their scores at home after a visit to the museum, instead of having their own personal local top-10.

What is the best way to do this? I was thinking of using mySQL or something of the same sort, yet I have 0 knowledge as to how that’s done :x

I use ActionScript 3.0

-Arjin-