are there any install notes for using the fullscreen? I'm having a bit of trouble... "The XFree86-VidModeExtension feature is not activated in your primary operating system. Virtual Machine in fullscreen mode may behave unpredictably. Do you want to switch to fullscreen mode?" then... "Unable to switch to fullscreen mode. Primary operating system does not support screen resolution requested by guest operating system. Select another resolution for the guest operating system or review your XWindows System configuration."