Screen resolution

Hello everyone,
I don't know where I'm supposed to post this topic but since I'm using a Mac... It's more a question then a problem. My computer screen resolution or screen settings, I don't really know how it is called, is 1440x900. I was wondering what resolution should I play my game? Like am I supposed to adapt the game to the computer or the computer to the game? xx

Sorry for the late answer
Mostly depends...
What I do is adapt game's resolution to my computer's, because the definition is better, but it stretches the image horizontally (removing the black vertical bars on each side).
You can also do it the other way, which will lower the definition but keep it to the correct ratio. You might also need to change the resolution back everytime (except if you find a program that does it automatically...)