Found this link. Apparently Apple's recommendation of matched RAM isn't warranted.
http://www.zdnet.com/blog/apple/no-penalty-for-macbooks-with-6gb-also-works-in-some-2007-models/2495
Has anyone here done it? How would I know if my exact model could take 6GB?
http://www.zdnet.com/blog/apple/no-penalty-for-macbooks-with-6gb-also-works-in-some-2007-models/2495
Has anyone here done it? How would I know if my exact model could take 6GB?