The New Milford Zoning Commission says a special permit is needed to turn the former Pettibone School into a community center.  This contradicts what New Milford Mayor David Gronbach said when he pushed forward with the plans this week.  He withdrew a permit application last week when the Board of Ed decided not to move from the East Street building because of a change in the agreement on how that move would be funded.  Gronbach says the Youth Agency and Parks and Rec Commission offices can moved into Pettibone without a special permit because they've held gatherings there in the past.