Hello everyone, I have a MacBook 4,1 A1181 EMC no.2242 [which I got for free] currently running os x 10.6.8. I am in the process [haven't actually spent any money at this time] of upgrading my ram to 4G via two 2G PC2-5300 DDR2 SDRAM @ 667 MHz as I only have the 1G installed as two 512MB...