How do i make a theremin

[Onkel Dunkel]

Ok this might sound silly :P I have a Moog Etherwave theremin witch i try to learn how to play. Then i got this strange idea. Why not try to recreate the sound of my theremin in my Virus Just for fun and maybe for sequensing it and at the same time i could practice my sound designing skills (or lack of same ). I didn?t think it would be very hard but i can?t seem to get the sound right Does anyone have any brilliant ideas? For people who don?t know what a theremin is check:
http://www.thereminworld.com/
and
http://www.moogmusic.com/detail.php?main_product_id=14

It?s the one on Moog?s website i want to copy. There is also audio samples of it on their site...