Steve, what you have described seems to be a simple Embed a website Widget.

Just give us the Placeholder code and where your inserted it: a big box and in the placeholder body, would be a start.

Screenshots will achieve little.

My test design seems to do what I think you are wanting:
SKelly Test page.xar

Placeholder Body:
Code:
<iframe src="http://book.flipbuilder.com/genmagonline/" width="100%" height="100%" frameborder="0" scrolling="auto" name="flippingBooks" ><p>Your browser does not support iframes.</p></iframe>
Acorn