Nope, sadly it's more complicated then that. For one thing, you have to create /home/knoppix if you boot in run level 2 or 3. You do this by copying the contents of /etc/skel, chowning and chmodding them.

Then you need to create a ~/.xinitrc file so you can start kde.

Then in kde, you can tweak the menu's and settings. Then you should remove the contents of /etc/skel, and replace them with the contents of /home/knoppix. Then you need to chmod and chown them back the way they were origincally, and delete the /home/knoppix you created.

Now however, when you hdd-install from the remastered CD, things will work great. When you run live from it there will still be various problems that need to be corrected in /usr/share/applnk (system-wide kmenu configs) and in /var/lib/kde/menu (kicker icons).

I think getting the kmenu and kicker just right are probably the most frustrating tasks in reasmtering a knoppix CD.