How do you take a unity project that you made and turn it into a program that can be placed on a website?
You go to the 'File' menu, and select 'Build Options...'
From this dialogue, select 'Web Player', and click 'Build'. The result will be an application that can be put on a website, running the Unity WebPlayer plugin.
And surely it would have been easier just to read the manual than to post that question there.