I just got the WD Scorpio and I'm pretty exited. I have seen a lot of threads in here about how easy is it to switch drives. I have looked a the iFixit guide and it looks pretty straight forward BUT, how hard is it honestly? I'm not a mac freak and I haven't done anything like this before. Should I be afraid or what? I'm only asking, cause I could pay around 250 dollars to get done in a certified store - but that's a lot of money. So guys, what do you say? Go or no go?