[NTG-context] How to us hvdm-exm.tex

Hello everyone. I am new to ConTeXt, but a frequent LaTeX user. I have got ConTeXt to compile simple text documents, and want to try to use the hvdm-exm.tex package (or module?) from http://tlcontrib.metatex.org/ When I try to load it with \usemodule I get the error module hvdm-exm not found I am using TeX Live 2010 on Mac OS X 10.6.4. Any thoughts? Jason T. Stein, B. Sc. (1998), B. Ed. (2002)