the secret of margrave manor

Hello all, i am having trouble playing the secret of margrave manor it said to download direct x sdk and so i did and then i was reading on updating my graphics card and i did and then i redownloaded my game,now it will run but the screen is all messed up and missing text and parts of the picture,what else is there to do to fix this? i am running windows xp and have directx 10. Thank you.