I remote login into my Pi using TightVNC Viewer. Now I can see Pi GUI. But when I do raspistill -o 0.jpg I can't see the display of the picamera?

Why is the picamera stream not visible in TightVNC? Are there some settings I have to change on Pi to allow the camera to be streamed to Remote desktop?

I read that Camera is laid onto HDMI as a separate entity not a part of Desktop. Can I make the camera to stream to remote computer?