SeeDMako: Is there any possibility to change graphic resolution in the game? 
  Edit: just realized you were talking about BD. I just uninstalled the game today ( did not enjoy BD like I did DD ) Seems you could do the same in BD but can't say for sure now. . . sorry. I will leave the info below as it may give you some help.  
 Go to the game install directory and locate a file named config.div  
 Open the file with notepad and look for the following lines :  
 // display width 
 width 1280  
 // display height 
 height 1024  
 Change the numerical values only to the res of your monitor and save. Restart the game. I found resolution above 1280 x 1024 ( or near that ) made the characters and text too small IMHO.  
 The start screen will never be larger than 1024 x 768 but the game screen will be at the res you set in the config.div file. At higher resolutions the start screen will have a wide black boarder around it which is only seen with the start screen.  
 Edit: Changed largest start screen size from 1280 x 1024 to 1024 x 768, my bad . . . =)