Like before with the Modern Warfare 2 Config, there is another one for Modern Warfare 3, though it doesn't have as many options as before in the previous one, it is not a hack and doesn't alter the gameplay style just other options. The Modern Warfare 3 Config is still pretty useful if anyone wants it, it can be found at:
[Only admins are allowed to see this link]
Hope you like! Thought I'd let you guys know.