I had this problem too, im running a pII 450 with a voodoo5, the game only shows the buttons on the menu just like above..

everything works fine in software mode really choppy but thats to be expected with a slow computer and no hardware exeleration

it sounds like the problem is with voodoo cards maby

.... i just got into the actual game with opengl, and it has texture loading problems on my computer (ie everything exept a fiew textures are white)