i'm a very new member to this website (5 min ago in fact), but i need the help of the more experienced mac users on this page to help me out with a little question of mine. i have always been a pc user, but now intend to switch to a macbook pro, however, i am totally unwilling to spend $400 for 4 gig of ram. it seems utterly ridiculous. i went to newegg.com and saw that they sell 4 gigs of memory for around a $100 and then have the courtesy to give a $30 rebate along with it. my question is this (really several questions) where should i buy my new memory? would someone at the apple store install it for me? which piece of equipment do you suggest i purchase?