Its definitely got that old school vibe down well, you've done a really good job there!
In terms of your markup (the HTML you've written), a couple of points:
* Some of the elements you've used are in unusual places and are duplicated for some reason(??), not sure what's going on there, but provided a simple example below to show what I mean for how it should be laid out.
<html>
<head>
<title>title</title>
<meta />
<link />
</head>
<body>
<div>content</div>
<script src />
</body>
</html>
* I would maybe suggest changing the header image so the whole thing isn't a fixed image, but just the center bit is, then do the side pieces as <div> so you can easily add content into them. Plus if you want to change up the navigation later, having to change some <div>s is a lot easier than image manipulation each time!
* Maybe make it so that when you click the banner you go back to the index page, cause right now there's no way back.
Hope these few things help, if you need some assistance with css for the layout feel free to ask and I'll see what I can do 🙂