Version: (using KDE 4.1.3) OS: Linux Installed from: Ubuntu Packages It is a lot of usable KDE3 applications. Some of them will be ported to KDE4. But some not. Because the are discontinued or developers are to busy (e.g Basket note pads or Kmymoney) When I was using Kubuntu 8.04 both kde3 and 4 it was possible to set oxygen icons for KDE3 (from kde-look.org). and apply same fonts and colors using kde3 system settings. Using 8.10 or KDE4 it is not possible to change visual appearance of kde3 applications. Maybe it is possible to do something like 'GTK styles and fonts' for KDE3 applications in KDE4 system settings? It would be very useful feature and kde3 apps will gain same support level like Gnome apps.
Please ask your distro to provide you the KDE 3 applications for KDE 3 configuration.