the only way to do this is with vnc.
there is hope to do it natively, since the quartz interface is in fact a lightweight window server, however these things are not written directly to memory and it would require some nifty work to intercept the messages... anyway this is from apple's dev site:
"Quartz is comprised of a high-performance, lightweight window server and a graphics rendering library for two-dimensional (2D) shapes. The window server features such advanced capabilities as device-independent color and pixel depth, REMOTE DISPLAY, layered compositing, and buffered windows for the automatic repair of window damage."