Binaries can be obtained from the main download site, or dopewars will compile with the free Cygwin tools under Win32. The installation procedure is the same as that for Unix systems - download the tarball, extract the files, change into the created directory, run the configure script, and then make. This builds a native Win32 binary, which does not need the Cygwin libraries to run.
In virtually all respects, the Unix and Win32 versions of dopewars should be identical. Both will accept the same command line parameters and configuration options. Be aware that unless you change the directories with configure before you build, however, the Win32 port will attempt to locate the high score file in its standard Unix location, which will almost certainly fail to be found on a Windows machine. The dopewars configuration file will still be read from $HOME/.dopewars, so one can still be used under Windows by setting the environment variable HOME to a sensible directory and placing a configuration file ".dopewars" within that directory.