This program is made mainly for Linux. Although you might get it to work on Windows to if you have a compiler, but that'll take some work. Hell, installing it on a Linux distribution probably won't be entirely painless either.
Regardless you'll need the following libraries and such:
Python (version 2.4)
Download the tarball from the sourceforge project page.
Extract the tar file:
tar -xvzf 22ndcmerc.tar.gz
Change directory to the named tactical: