The 2010 simulation will be the current conflict in Ciudad de Juarez, Mexico.

The Official Scenario Guide can be viewed here.

The preliminary UCS 2010 schedule can be viewed here.

Suggested background reading can be found here.

A good resource for learning about multilateral negotiation is Negotiating Trade: Developing Countries in the WTO and NAFTA.  While the book is focused on trade negotiations, it provides practical advice for negotiating in multilateral settings.