[Zope] DTML-tree and frames.

Hi there. I want to create an website on which I split the screen with a narrow left side in which there will be an dtml-tree function and a wide right side. When a user clicks on a expandeed leave on the left side I want to display information on the the wide right side. However it seems that I can not get the frames stuff to work. Are there any suggestions or examples out there ? With kind regards. Fred PS. Still an Zope Newbie