lol I have a undergrad in WebDesign and never used FrontPage one. You can save the files to a folder and upload that folder with a ftp client such as Fetch or MacOS or wsftp for Windows.
You can also use the built-in File Manager to select the files from your computer to upload.
I know somehow you can upload via FrontPage but don't know how. I did a Google search and came up with this: