astraldemon: No game can let you change aspect ratio...Aspect ratio is something that defines ratio between Width and Height of your monitor. How is that unclear to you? Resolution is aspect ratio dependent, it means how many pixels you have in width and height....
So it is like this:
4:3 = 1.3333 1280:1024 = 1.33 meaning your width will always be 1,33 times bigger then height
If I have monitor with aspect ratio 16:9, I cant have resolution in 4:3 without having black borders on the side of the screen
So to play on aspect ratio your monitor is, change resolution accordingly, look under your properties what's screen resolution of your monitor and put that in NWN under settings.
You can play whatever campaign you like, the story isn't relevant to one another, and you can save your character in any campaign and import it in another.
Other games usually display what the aspect ratio becomes once you have changed the resolution, hence my confusion.
Thanks for the help.