Thanks for the link. I've actually done some socket programming (way back in high school), and I can probably wrestle with the programming side of it. I guess my ignorance is mostly with the logistics- how do I even get a server set up? I can get a simple server and client running on a single computer, but the vastness of the internet scares me. Should I use a home computer that's always running, or should I use my site's host (hostgator)? Either way, what goes into setting it up? Or am I going about this the wrong way- should I look into using a database of some kind? Eek!
I know the answers to these questions are "try it and see what happens", so I suppose that's my next step.
If all you're trying to do is make a high-score board then I would recommend something simpler:
1) On your main website create some kind of html form input that will accept a submission, add it to a database or file, and display the results.
2) Test your form submission by creating a dummy html submit page that submits to your form.
3) Rig your game to submit the high-score to this html form.
This scenario is using any web server as your server. Full blown client/server networking with sockets only makes sense if you want to create a multiplayer game.