[furtivefelon]

mmm.. install the port system first.. then su into root (make sure your user is on the wheel group.. i learnt that the hard way).. then do pkg_add -r kde, it'll install both kde (desktop manager) and kdm (login manager).. then when you've done that, reboot, login into root, and then type at command line kdm, that launches the graphical login manager, and then you can choose which GUI you want to login to..

that's the easy way, i haven't had too much time to fine tune my stuff.. if you want more detail, feel free to pm me