That program isn't in the MyDSL respository so you will need to compile it from the source code.
This page has a guide to compiling programs: (http://www.damnsmalllinux.org/wiki/creating_a_compressed_extension_from_source.html)You don't need to make a tar.gz package for the MyDSL respository, but you are encouraged to so that you can help others who want the program.
That page doesn't tell you how to set up a compiling environment. An easy way to do this is to first install the following packages from the MyDSL repository:
- gcc1-with-libs
- gnu-utils
- compile-3.3.5