Hi Guys, I tried searching the forums but couldnt find a perfect answer... Also read the Guide for Ram but still have some Q's ... Ok here goes.. I have a 17" Macbook Pro - Intel core 2 Duo 2.40 Ghz with 2 GB ram and 160 gb Hard disk .. This was Purchased in Feb 08 Now I would like to upgrade the memory to 4 GB (i use Photoshop heavily and at times my mac slows down) I have confusions about what kinda memory to purchase ... I read somewhere that some MBPs only have support till 3.3 Gb and dont utilize the complete 4 GB capacity.. I believe this is not applicable in my MBP's case? Also what is DDR2 and DDR3? which one should i choose? like it says "Type: 204-Pin DDR3 SO-DIMM" and for another it says "Type: 200-Pin DDR2 SO-DIMM" whats the difference? Also what is "Dual Channel" Should I buy the memory as a kit? or I can buy to separate pieces of 2gb each? Also since I am not in the U.S I cant order from Newegg which i believe is the best and most recommended choise on this forum .. So I ll have to buy locally .. And here i dont think they have the "Crucial" brand available .. which other brands can i go with? Plz gimme 3 or 4 options .. is kingston a good choise? Have u guys heard about "hynix"? And now regarding the hard drive upgrade Question... My MBP came with 160 GB so now if i wanna upgrade .. what capacity max can I upgrade to? what max size HDD will my MBP support? What brands do u guys recommend? Seagate? Sorry for so many Q's but yr help will be much appreciated P:S - My MBP will be 1 yr old in 15 days ... Should I go in for the Apple Care thingy before that? It gives a 1 year added warranty if I go for Apple care before it expires is that right? Is Apple care worth the money?