I attempted to install KDE but the NUKE login indicated what happened.
KDE appears to be a work in progess too and kcontol was nuked with no menus.
VectorLinux Standard Edition has always used a lighterweight window manager and desktop environment, rather than KDE or Gnome. If you want KDE you should load VL5.9 SOHO or await VL6.0 SOHO which comes complete with KDE. The philosophy behind VL Standard Editions is to have a slightly less resource intensive distro than a KDE one.