Hey, I plan on upgrading the memory in my Macbook Pro from 2gigs to 4gigs. I purchased this MBP in August of this year, so its not the brand new model. The specs are as follows: 2.4GHz Duo core 2 Gigs Ram 200 GB 5400rpm HD Nvidia Geforce 8600GT 256mb My biggest questions are: 1. Can this mac model run DDR3 memory? 2. Which memory manufacturers are best for the MBP? 3. What is my best bet for $100 or less?