Hi!
You have to edit with notepad the
general.opt file to activate the third language (German for you, spanish for me

)
Search for the file in
C:\Program files\Wars in America\WIA\Settings
Open it with notepad and on the top you will see:
2. *** General interface choices ***
// language (0: English; 1: Francais; 2: Espanol; 3: Deutsche)
Language = 0
ThirdLanguage = -1
Edit it so it looks like this
2. *** General interface choices ***
// language (0: English; 1: Francais; 2: Espanol; 3: Deutsche)
Language = 3
ThirdLanguage = 3
Save changes, close the file and you are set
Just start the game again and it should be on German. And from now on German will be on the options menu as one of the selectable languages.
By the way, never share this file with anybody. It contains your serial info at the bottom.
About your second question, i have never tinkered much with it, but i guess this options are related with the resolutions drop down menu you have under them.
Have you tried to select other resolutions (not your desktop one) from there?
Regards