Black Dahlia Mouse Lag
 

Help! I've decided to replay Black Dahlia...something I haven't done in many, many years. Anyway, I followed Inferno's instructions for installing the game and it seems to have worked. My problem is that there is serious mouse lag when I start the game. I can't even get the game going because the mouse lag is so bad. Any suggestions? Please help because I'm really anxious to play this game!

Thanks in advance!