Negaid is posed as a plugin of a legal expert system shell, eGanges, which provides negotiation support for conflict prevention applications. A cohabitation contract application that uses an ontology of potential conflict demonstrates the negotiation logic of the expert system as seamless with the Negaid algorithm, a revised version of the Family Winner algorithm. The new negotiation algorithm incorporates the use and reuse of the cohabitation contract application until a list of differences can be identified for resolution as a matter of compromise. The list is then subjected to the Negaid algorithm, which assists in the negotiation process by suggesting trade-offs. ICAIL 2007 June 4 – June 8, 2007 Stanford University