If you don't work in root exvironment then you don't need an antivirus running on your machine.
start the printerdrake from the root prompt and go to expert mode there choose the remote SMB/CFIS option and continue fill the appropriate parts, If Mandrake does not detect your network printer driver you can choose the closest one from the many available choices
Well Mozilla will be a better option if you wanna try JAVA though Konqueror supports it too.
Uase KdeControl Manager or Roght Click on desktop to get the desktop manager and change the wallpapers.
You can get themes for KDE and gnome at http://themes.freshmeat.org