I'll receive a brand new 160gb drive for my Macbook in a few days, but I have no idea whatsoever on how I would install OS X on it. Do I just replace my old drive and boot the computer with the discs loaded, or do I have to do something first? (Ie. hold any key during boot or so..?) Also, is there anything I might encounter that will confuse me (choices I have to make and so on..) Do anyone have any tips/suggestions?