why do you change your game i cant help you i dont like mess my game but thats not belong in this thread does the file you download ..... just post a screen of the files wich are in directory or i dont understand how does it look like maybe you have to add somethink to you game not just download the file
make sure the background files you want to use are saved as "splash.bmp" (if you want to make it look better, edit in "splashdark.bmp" and "splashdarkstripe.bmp"). That's all you really have to do. Just save the BG as "splash.bmp" and place it in folder "cs2d/gfx".