question iframe

hi all,

i want to show a part of a page in another page.
i used iframe, so that's not the problem... the problem is that i want to
show the content that's in the middle of that page. i've used marginwidth
and marginheight but i still get the upperleft shown in the iframe...
do i have to use something else than iframe?

can someone help me?

ps the iframe is placed in a layer... (if that worth to be known)