adding friends in a list

[naota]

hi there
i tried to script a friendlist (just like the social link list in persona 3), but i have some problems with adding friends...
so i take a look to the items script. that makes me even more confuse lol

Spoiler

  #--------------------------------------------------------------------------
  # * Get Item
  #--------------------------------------------------------------------------
  def item
    return @data[self.index]
  end
  #--------------------------------------------------------------------------
  # * Refresh
  #--------------------------------------------------------------------------
  def refresh
    if self.contents != nil
      self.contents.dispose
      self.contents = nil
    end
    @data = []
    # Add item
    for i in 1...$data_items.size
      if $game_party.item_number(i) > 0
        @data.push($data_items[i])
      end
    end
    # Also add weapons and items if outside of battle
    unless $game_temp.in_battle
      for i in 1...$data_weapons.size
        if $game_party.weapon_number(i) > 0
          @data.push($data_weapons[i])
        end
      end
      for i in 1...$data_armors.size
        if $game_party.armor_number(i) > 0
          @data.push($data_armors[i])
        end
      end
    end
    # If item count is not 0, make a bit map and draw all items
    @item_max = @data.size
    if @item_max > 0
      self.contents = Bitmap.new(width - 32, row_max * 32)
      for i in 0...@item_max
        draw_item(i)
      end
    end
  end

if i understand it right, then i have to pre-define friends for the script? something like "$game_party.friend"?
does anyone know how to add stuff in a window_selectable for a list? i appreciate any help x3 thanks in advance

ps.: sorry for my bad english ^^"