Files - index.html?

I have a problem and it might sound very dumb, so you will have to be patient.

Ok here goes, I’m having a lot of problems at the moment testing my site that is made in flash - I keep getting the page not found page.

I have made a homepage into which all other swf files will be pulled in by pressing home, contact etc. Now then, quite obviously the homepage will be the first one to load, so, should i name this page index right from the start, and then when it is published, it creates the index.html page ready for uploading to the server, or can I name it homepage and then at a later date, rename the file. This later one is the one I have been using and I think it is causing some sort of conflict - I need to know the correct procedure.

Thank you