To build the NeuClear framework you first need to install Maven. Follow their installation instructions and you should be ok. I haven't tried this under windows yet, but I'm guessing it should work fine. Maven fetches all the required libraries you need the first time you attempt to build it. There are however two required libraries that are not yet part of their central repository. Some of the required libraries are not in maven's own repositories, we have our own maven repository at http://neuclear.org/maven/ and the project is setup to get all the latest from there.
Simply unpack it in mavens home directory retaining the directory structure and you should be allright.
Unpack the source and binary distributions. Familiarise yourself a bit with maven. It's a bit different than ant, but very easy to learn. To see the options available go to the type:
~/projects/neuclear-id> maven -g
Of these the most important one is to simply type:
~/projects/neuclear-id> maven war
This should build everything and create a neuclear-id.war file in target/. You can then deploy this war file in your J2EE compliant servlet engine. eg. place it in tomcat or jetty's webapps/ directory and restart.