Double click the ZIP file to extract the folder called
'Brewer
X.
X.
X' which contains the application
('X's are the version number).
Ideally you should drop it into your Program Files folder, but as long as you don't move the actual contents of BrightScreen then it can sit anywhere.
There have been reports of some evaluation versions of WinZip not extracting the files as would be hoped. Please ensure you have the latest version of WinZip