Welcome to the WebmasterWorld boards, Jez. Would an IFRAME do the job for you? If not, another way to do this might be use a positioned div with set width and height and set overflow to scroll.
MSDN Tutorial [msdn.microsoft.com]
MSDN Example [msdn.microsoft.com]
(BTW, this stuff is problematic in Netscape, but I assumed from your post that you were developing for an exclusively IE audience)
