Right now i have an early 2009 macbook pro 15". It has 4 gb ram and 320 gb hard drive. I found a momentus xt and 8 gb ram that i really want to put in it. My applecare plan doesnt expire until summer 2012. If I put these into my computer will I be voiding Applecare. I have heard different things and just want a definite answer. Thanks in advance.