How can I add a package to Qt

I downloaded a package called QtIOCompressor, I need to use the functionality like zipping a directory gzipping a directory etc etc in a application I am coding. But I dont know how to add this package into Qt or how to configure this package by which i can use it with my application which i may code in future!

InfO: http://doc.qt.nokia.com/solutions/4/qtiocompressor/qtiocompressor.html download: http://qt.nokia.com/products/appdev/add-on-products/catalog/4/Utilities/qtiocompressor/

1. step: read the INSTALL.TXT that comes with the package and follow the instructions. Basically that is just: qmake and nmake
2. step: look at the .pro files in the example directory for usage in your program. (you just have to include src/qtiocompressor.pri