You can just use an iframe and float it on top of your content of your html page.
<iframe src="foo.aspx" style="postion:absolute; top:100px left:100px; z-index:100"></iframe>
Eric
Coauthor of Ajax In Action [#1 Computer and Internet book on Amazon for 2006]
If you get an answer to your question, please mark it solved so people don't waste time reading already answered questions!