Markzware has released Pasteboard 7 for the Mac, an XTension that changes the width and height of the QuarkXPress pasteboard. It will allow one to adjust by value as well as by percentage, giving a wider range of options than that within the QuarkXPress application. This new release supports QuarkXPress 7 and is now Universal Binary.
[ Price: from US$29.95 ~ Requires: Mac OS X 10.4 or later, QuarkXPress 7 ]