Unzipping in Vista problem

Hi, I wonder if anyone can help. I have zipped a folder. The folder contains
some files and ANOTHER folder that contains Quicktime movies. If I unzip this
in WinZip - no problem - I end up with an overall folder that contains the
inner folder and the files. If however I unzip with VISTA it wants ne to
unzip the INNER folder as well! This makes it very complicated for novice
computer users. Does anyone know how - with Vista - I can simply unzip the
entire thing in one go. Thanks in advance. Robin