Just be sure that your index.html is in the root of the site, the other things are not important
I this way your main page should be available by blabla.com and blabla.com/index.html
It sounds like your directory index isn't set. Try creating a file called ".htaccess" and add the following to it:
Code:
DirectoryIndex index.html
Then upload that to the root directory (where your about, contact, index.html) files are. Basically, the .htaccess file will tell the browser to use the index.html file as your directory index. Here's a link with more information:
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