I just would need some help to set the whole thing out!
If you have a website with FTP access, then everything is extremely simple.
1) download/open the FTP program suggested by your hoster, and go to the adress specified by the hoster.
2) in your server area, make a new folder with a name that follows server/networking rules and contains the name for your game
3) copy the contents of the www folder from the local computer to that new folder
4) open your browser, enter your server adress followed by the foldername (www.yourserver.com/yourgamefolder
or so) into the adress line
5) play the game
If you have problems doing that, you need to specify at which step you did what and what the results were. We can't help without details here.