miller paving limited

In the process of movement, the body's structure will change with the movement, can strengthen its own constitution, the movement is one kind of activity way that mankind cannot leave. I bought DKS today from Steam and upon Installing it i started it to learn but Alas theres a big problem personally. the characters and the World generally wont show, all i purchase is a black screen but i can easily see the mini-map and also the windows tho ..... this is weird! i could to learn with all the various Video options but nothing works! i are able to see the Cinematics fine tho but as soon i start playing i cant understand the world in any way. anyone got ideas what could be the problem? My video card is a Geforce Gts 250 i play under Vista 64x