Mysterious Firefox bug fix

I used the newpage.php.html template and found that if I opened that file (directly from the zip package) in Firefox, all seemed well.
When I uploaded all the files and opened the page in IE, all seemed well, however in Firefox 2 the first 3 characters on the page always were: 
These characters cannot be seen in Notepad, not in Dreamweaver, but they ARE there.

This has all Bill's original files, exept for those 3 characters.
Do a comparison between Bill's newpage.php.html and mine an you might see those 3 characters. I used Total commander's file comparison feature for the comparison

I wonder if my Mac will show those characters?

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