North Providence is ready for winter with a new fleet of used snow plows.  Mayor Charles Lombardi says the city paid 23-thousand-dollars for two dozen pieces of heavy equipment at a state DOT auction.  Nineteen of the vehicles are old dump trucks fitted with snow plows, and another is a street sweeper.  Lombardi refers to himself as a motorhead, and says he plans to use some of the plows for parts.  He says at least eight of the plows will be put into immediate use this winter.