When you build your game for web player (see build settings), you obtain two files.

• The HTML. You can modify some stuff in there, but don't mess it up if you don't really know html. The important part is where the .unity is mentionned. As it is, the .unity needs to be beside the html.

• The *.unity. All the datas (resources, scripts etc) are compressed in there. It is used by the html and the browser.

Bottom line, you need to have the html pointing at the .unity. If you don't touch it, you just need to have them both at the same place. You can then give the adress of the html file.

You can use http://dropbox.com to upload your project. Register and download it. After installing just drag and drop these two files into your dropbox-> Public shared folder, these folders will be created automatically on your pc. After upload finishes right mouse click on webplayer.thml -->Dropbox--> and "Copy public link". Now you can paste your games link.