Hi Mark. Yeah the netbeans ide requires that you have a jvm already installed on your machine before you run the netbeans ide. You can get the free jdk/jvm downloads from sun. In case you already have the jvm installed ... i think you may want to try and reinstall the jvm. There is one ide that corrupts your settings when you uninstall - and that may have been what happened to your machine. NetBeans works out of the box. No need to configure anything.