HTML Attribute for <IFRAME ...>
SRC ="URL"

SRC indicates the URL of the document which should go in the frame.

This Code Makes This 
<IFRAMe SRC="hello.html" WIDTH=250 HEIGHT=100>
If you can see this, your browser doesn't 
understand IFRAME. However, we'll still 
<A HREF="hello.html">link</A> 
you to the file.
</IFRAME>

<IFRAME WIDTH="..."> >