you should have and FTP server name and password.
In your web program all you have to do is, go to the FTP server and say, Connet and this will down load the links to your site.
Click on the html file and it'll open up so you can re edit it and when you hit save, This will update your site..
when you signed up to your site they would have sent you your password, user name and the FTP link.... check that it should be in the email you got...
In saying that, log into your web site and go to the page you want to fix in the file manager.
their should be a wee button to edit each html file and up will come the code. delete all the code and replace with the new codeand hit SAVE....
THE FTP IS QUICKER