File list (Check if you may need any files):
ch23
....\ch23_1
....\......\ball.bmp
....\......\bg.bmp
....\......\canvas.cpp
....\......\Thumbs.db
....\ch23_2
....\......\ball.bmp
....\......\bg.bmp
....\......\canvas.cpp
....\......\Thumbs.db
....\ch23_3
....\......\ball.bmp
....\......\bg.bmp
....\......\canvas.cpp
....\......\Thumbs.db
....\ch23_4
....\......\bomb.bmp
....\......\car1.bmp
....\......\car2.bmp
....\......\ch23_4.cpp
....\ch23_5
....\......\bground.BMP
....\......\mask.bmp
....\......\snow.bmp