Is it possible to host a forum that requires MySQL, and PHP, on a subdomain? I am not ready to go out and buy a full domain yet, but I will eventually. In the mean time, I wanted to host it through some subdomain. But all of those that I tried, don't have MySQL databases, or have something else missing. Does anyone know of a good free web host that will get my forums working?

PS- Im using Simple Machines

You can get a free listing like http://myforum.at3host.com plus you get several forums to choose from at http://at3host.com Everything is free including the database and php. Go to the site, choose a forum under free pscripts and you could be receiving posts as early as tomorrow. If you need any more advice, contact me via my profile.

None. Setting up of forums and MySQL requires you to know the server's password, which without buying domain won't give you the ability to do so.

You can find free forum hosts to do so though.

Freeforums.org is a good one for phpBB boards.

http://www.freeforums.org/

If you are serious about websites either for personal or your business, don't go to free web hosting as they are usually not reliable and you may end up losing all your hard work. Free web hosts usually put advertisements on your websites and it could be annoying.