If you are a resident of Germany, we advise that you do not download this software. Doing so is in breach of the new law StGB §202c.

You will need to install Subversion (which is a CVS replacement) via fink or compile it yourself. Then direct it to either svn://shoxed.com/svn/kismac/trunk or http://kismac-ng.googlecode.com/svn/trunk/.
Web access is provided at http://kismac-ng.googlecode.com/svn/trunk/

Also, see the notes on building from source on the wiki.