Hi,
I got it working on windows 7 64bit by opening the .jar file as a .zip file, deleting the 2.1.0 version of bluecove from lib/ , and adding this jar instead: http://snapshot.bluecove.org/distribution/download/2.1.1-SNAPSHOT/2.1.1-SNAPSHOT.63/
At least it starts up, I have yet to pair an actual wiimote :-)