I just bought a mac and I'm a first time user so I had a few questions regarding the Snow Leopard upgrade and Zagg InvisibleShields. 1. Does the apple retail store install Zagg InvisibleSheilds for MacBook Pro's? If not, does any other store? I tried installing it myself but I ended up frustrated with a crappy looking MBP. 2. I'm trying to upgrade to Snow Leopard through the apple website but after i finish giving the required information, it takes me to the apple store cart, but the problem is that the cart is empty. Am I doing something wrong? I bought my MBP June 23 and I really don't want to buy Snow Leopard if I could just pay the $10 and upgrade it.