it actually depends on what is in that .html file.
Is the content a formatted table of data? Because assuming it is a true html file then it is marked up with tags (like <html>). I would think it is easier to view the html file in a browser (like the one u are using to read this reply) and then highlight the contents and copy it to the clipboard and then go over to Excel and just paste.
You want to view a .html file in excel....interesting....
You could always try opening the file in excel. Don't think it'll work that well but you can always try it!
Another option is just to rename the file so the extension is .xls or .xlsx file. That will give you what you want but it won't look as pretty and I strongly encourage doing this with a copy of your .html file, not the real thing.
