No offense, but what good would that do?
I know this is a big bump, but I just wanted to sort of answer this question. Although I don't really have any REAL knowledge about why this would be helpful, I can tell you this: having two files named the exact same thing, especially such an important name like index.html is a pretty bad idea. It shouldn't have any bearing on how your CSS displays, but the only file named index.html should be your home page.
-rockerest