Probably the easiest way to do this is to downloa and install the Qt SDK for Windows (http://qt.nokia.com/downloads). It includes the Qt4 development libraries, documentation, and an IDE called Qt Creator.
Using Qt Creator in addition to CMake (http://www.cmake.org/) is probably the easiest way I've found to get up and running with a LyX development environment. All it involves is checking out the code, to opening a new project, and then clicking on the development/cmake/CMakeLists.txt file. Qt Creator will then configure, compile and index your project for you. And best of all, everything is free. There are ways to get up and running with MS Visual Studio, but I'm not nearly patient enough to figure them out. Cheers, Rob
