Recommendations: Negotiation Skills training in Boston area

 Hi All,

I'm looking for recommendations for training in negotiation skills and techniques for myself and my colleagues.

Context: We are specialist individual contributors in IT Service Management looking to roll out ITSM processes across a new, merged IT organization. We have no role power and are racing to create relationships with the 'other half' of our new merged org. We need to persuade peers and their leadership to converge on adopting uniform processes. We have stated support from the CIO but the middle layer of management is somewhat uninterested. 

Needed: recommendations based on first- or second-hand experience of training courses that help us understand how to negotiate change sideways, diagonally-up and straight up in a large technical organization. (Boston or north-east preferred so we can spend more money on training and less on travel). 

I'm doing desk research right now and have identified some good offerings from Harvard Business School and Harvard Law School. If anyone has experience of those, or great stories to tell about other organizations, I would be very grateful to hear from you.

thanks in advance

 Simon