# File rbot/dbhash.rb, line 35
    def initialize(bot, key)
      @bot = bot
      @key = key
      if File.exist?(@bot.botclass + "/#{key}.db")
        # db already exists, use it
        @db = DBHash.open_db(@bot.botclass + "/#{key}.db")
      elsif File.exist?(@bot.botclass + "/#{key}.txt")
        # convert
        DBHash::convert_to_db(@bot.botclass + "/#{key}.txt", 
                              @bot.botclass + "/#{key}.db")
        @db = DBHash.open_db(@bot.botclass + "/#{key}.db")
      elsif File.exist?(@bot.botclass + "/#{key}")
        # convert
        DBHash::convert_to_db(@bot.botclass + "/#{key}", 
                              @bot.botclass + "/#{key}.db")
        @db = DBHash.open_db(@bot.botclass + "/#{key}.db")
      else
        # create empty db
        @db = DBHash.create_db(@bot.botclass + "/#{key}.db")
      end
    end