I'm really sorry to be such a pest... I want to be sure that the extension .htm and .html are meant as the same? I tried to change my extension from htm to html on my sales pages and fp2000 said no, no, no....
Answering my own quesion and maybe for some of you out there: copied from search page What is the difference between the HTM and HTML extensions?
Short Answer Other then the obvious, the letter "L," there's not much of a difference between the two extensions. Most, if not all, web browsers and servers will treat a file with an HTM extension exactly as it would a file with an HTML extension, and vice versa.
Long Answer Practical Differences Practically speaking, there is no difference between the two extensions. Both denote that the file contains HTML. This is really a matter of convention and is not an absolute, but most realize that a file whose extension is htm or html contains HTML.
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