How Do I Build A Theremax?

Hi! I want to build a theremax but i cant find any schematics or anything on how to build it.
I'd be really happy if someone could help me:)

click me (http://www.paia.com/ProdArticles/theresch.htm)

;-)

I ask myself why I make an effort to answer only three and half an hours later if there is no reaction afterwards... :-(

Thanks! I've not been able to reply before now because havn't had access to a computer since i posted the topic. However i'm thinking of ordering the electronic kit for the theremax but building the case from scratch.