No problem, glad I was helpful. I'm a girl btw, and yes I am slightly crazy at times
To clarify though: you don't need to use <html> and </html> tags in the file you're including. You should in the index though. That's what I meant, sorry about the confusion, if there was any.
If the index is named index.shtml and you have the right code for the inclusion of your other file, it should work... but it has to be exactly right, if you put a space where there shouldn't be one (in the line that does the inclusion), it won't work. It's kinda sensitive.
Hope it works out for you