Yeah. Although each window manager provides its own methed to draw the windows, weather flexible, fast or feature packed. During the development of KDE, they decided Qt was perfect for there project. Although GTK is easy as hell to use, Qt is just as good imho. Anyways, youll want Qt3 installed along with kdelibs3 installed. If i where you, i would get the latest possible, especially if built by source and not installed through binary rpm. If RPM, yes, dependency hell.. but some people can deal with that to an extent. Especially if needed. for kdelibs3 you should need qt3 not qt. Older versions may not have the same properties. i dont know. You may also want kdebase3 for some kde essentials that cant be installed seperately, but depending on your distribution, this could cause kde to become the default window manager. If its an LFS machine, than, needless to say, if you have already installed a graphical login manager, you need to configure it to use it, and it wont become kde by default. Armarok is not in there, but you could have guessed that. Are you new to the distribution your currently using, or did you install it again except with different packages?
Hope you find what you need.
@Zmyrgel: They are? wow... never knew that. Maybe only if something else is eating up the rest of my computer, and resources matter alot more. But since my computer is generally new, it doesnt seem to be experiencing that. Maybe launch time its slower?