Code:
<html>
<head>
<title>Meta Redirect Code</title>
<meta http-equiv="refresh" content="3;url=http://www.astronautix.com">
</head>
<body>
The Encyclopedia Astronautica home page is at <a href="http://www.astronautix.com">
http://www.astronautix.com</a>
<p>Your browser should be automatically redirected to this location.
</body>
</html>
there you go. make your first page with this code on it also have your flash, then in place of astronautix.com, have that be your main site you want to go to.