About alternative to IFrame when embedding external page.

Hi all,
If I want to embed an external page inside my own page, I can use IFrame like this:
    <iframe src="http://www.google.com.hk" >
    </iframe>
I would like to know in asp.net 2.0 and Ajax, do I have any alternative way to do so other than using iframe? Is there any control that can be used as iframe?
Thx
Xavier
...