well if you're wanting to open up another website then you want to go:
<iframe src="http://testsite.com/dir/to/file.htm" width="XXpx" height="XXpx"></iframe>
as far as linking to a certain part of the page you would need access to that page and find out the name of the anchor... when you find that out (let me know if you need help) place #achorname at the end of the .htm.
or if you want to link directly link <a href="http://nameofsite.com/dir/to/file.htm#anchor>Text</a>
I hope that's what you're asking :D