http://wiki.kde.org/tiki-index.php?p...libs+for+win32 - Information about the native port of KDElibs to windows. I think this is what the post above mentioned.
http://iidea.pl/~js/qkw/ - The same project but I think this is KDE <= 3.5
http://www.iidea.pl/~js/akademy/kdelibs_win32.pdf - Slides from a talk at aKademy about KDElibs for win32
http://www.kdelibs.com/wiki/index.php/KDElibs4_Installation - A general info site about cross platform KDElibs including installation instrictions for KDElibs 3.

Also it is mentioned http://wiki.kde.org/tiki-index.php?page=KDE%204%20Goals that the win32 port of KDElibs will be an important part of KDE4. I guess this is all being made a little easier now that Qt 4 is GPL'd in Windows.