Create a page with your layout on it, already coded, and name it layoutpage.html

Copy and paste this code at the top of that page

<div style="position: absolute; top:0; left:0">

Now create a new page and paste the following code onto that page. Edit the WIDTH and HEIGHT to the size of your layout. Name this page layout.html

<center> <table width="WIDTH" height="HEIGHT" align="center" valign="center" border="0" cellpadding="0"> <tr><td align="center" valign="center"> <iframe width="WIDTH" height="HEIGHT" src="layoutpage.html" scrolling="no" iframe frameborder="0" border=0></iframe> </td></tr> </table>

So when someone is entering your site, they should be viewing layout.html