The file to be served by the web server is the same for http: or https:
The web server needs to be configured to only accept https connections.
Start here: https://httpd.apache.org/docs/trunk/ssl/ssl_howto.html if you are using an Apache web server.
If you are sharing a server you need to contact the server provider.
Having said that, there is a way to redirect a http connection to https if you are using a server side language such as PHP.
There is no need to change anyting in Tools or your web pages, it is all in the server.