Could you please tell us the detailed steps how did you download the file from the remote ftp site? Have you got any error message during the process of downloading the file?
Referring to change the text to H1, H2, you can edit it in Sothink HTML Editor. You can choose the text first, and then click H1 in the toolbar in Sothink HTML Editor, and the label will be added to the HTML mode of the webpage automatically, just like the following:
<META NAME="GENERATOR" CONTENT="Sothink HTML Editor">
There are six levels of heading in HTML with H1 as he most important and H6 as the least.
Hope that will be helpful to you.