I remember this too. It was called "Greenspan" and was for ACS 3.4 (Oracle). I couldn't find anything on either Google or web.archive.org.
I've written a much too complicated spec (warning: it isn't finished and is internally inconsistent), but whether I'll have time to implement it in this millenium is doubtful.
Accounting rules are different in all countries, but the basic bookkeeping principles are the same.
