Paste the following code between the <HEAD> tags of your page:
<META http-equiv="refresh" content="10; URL=index.html">
Play with the timing to suit your needs. Our sample code sets the page to move on to the next URL in 10 seconds (that's the 10 in the code), but only because that seems like an appropriate amount of time. Depending on what's on the page, you can set the timing interval to anything you want. Just make sure that people visiting your site have enough time to read through any text. There's nothing more annoying than going to a page, starting to read what's there, and being forcefully thrust to another page before you've finished.
One problem with using meta refresh is that the clock starts ticking when the page starts loading. If a user is on a slow connection or there's congestion between their machine and your server, the page could refresh before fully loading. You can get around this by foregoing the <META> tag and instead place the following attribute in your <BODY> tag: