It's not the best fix, actually its kind of a hack-job, but it works. KDE4.0 installs fine, if you just follow the instructions that wolfden posted. Make sure you do everything in root, else it wont work. For internet, log on in xfce, make sure you have a connection, then log on as KDE4 and you have internet. There is probably a cleaner fix, but it works. If anything, use a cable.
You add all those package names strait to package.keywords