The screen resolution is fixed for the game. What you are experiencing is normal in widescreen computers.
If you wish to change it, you should go to your graphics card options and stretch the screen.


In this thread you can find a conversation about the same subject, you can continue with your questions there if you need to.

http://fm.en.kupaisky.com/Community/Forum/View.aspx?num=3328&searchtype=0&pagecount=0&searchvalue=&sort=5&category=E01&page1=1


Also, locked because this question does not go in Tips and Tactics.