How do I create a 301 redirect, I want to point traffic from an unpublished site to another web address?

If this post is already on the Forums, I apologize. However, in my defense, I've seen nowhere to vfy if any post is already on the forum. I've sent this issue to Support, but not hearing anything....

I am almost ready to upload my new site to the server. The previous site was an .htm one, new one .html. Some of the pages I would like to direct to new pages, e.g. example.htm to example1.html, the...