I have late 2008 15.5" Macbook Pro Processor: 2.66 GHz Intel Core 2 Duo Memory: 4GB 1067 MHz DDR3 Under Video Card it lists two (not sure why?) NVIDIA GeForce 9400M NVIDIA GeForce 9400M GT I was looking at upgrading the ram to possibly 8GB (or can I go bigger?) as I assume by now it should be affordable, and was not sure what route to go, any suggestions, not even sure what I need to put in. What should I look for, any brand in particular? DDR3 1067 MHz? I assume right now I have 2 x 2GB sticks? Anything else I should upgrade at the same time thats somewhat affordable? Processor? Video Card?