Sorry to disappoint. This thread is not on how to run kde desktop environment on windows. KDE is consider one of the best desktop environment out there. It is based on kde libraries utilizing Qt libraries which are we can called libraries for C++ which enables us to write graphics easily.Kde on windows is a project to run KDE applications on windows. It is still under development and is usable but is not stable at all. It supports windows XP, vista and 7.
You can use plasma desktop instead of explorer. many others applications like amarok, ktorrent,. Main aim of KDE on windows is to attract users to use FOSS softwares and brings developer to its fold.Also guys who are familiar with KDE can work on their office on windows where default OS is not Linux/BSD. This project replace KDE on Cygwin. As KDE can be run natively on windows albeit not stably.