Two men working on a walking trail around Margerie Reservoir and Route 37 made a presentation to New Fairfield officials recently.  The walking trail would go from Saw Mill Road to Bear Mountain Reserve in Danbury.  The men spoke about the benefits of increased activities for the health of residents.  Funding for an engineering study would come from a state Department of Transportation grant.  They've also applied for a grant from the state Department of Energy and Environmental Protection.  The proposal was included in the Plan of Conservation and Development by the Planning Commission and Zoning Commission.