iframes, /embeding a web page. Options

[tantarism]

so i found out about this thing called iframes a while ago, where you can basicly embed a web page into your page, make it however tall and wide you want, and then you can add a tag to your links so that when you press a link it opens up in the iframe. i tried it and no matter what i did, the code came out all f'ed up. so then i gave up, and while i was browsing, i found somebody who was using it! argghhhh will somebody help me with them? or i at least need to know how to embed a web page. those wont work for me either. is it my browser that wont let it work? because im running the newest IE so i doubt it