Um, you watch HD movies by opening the files. It's that simple. Your resolution doesn't affect that int he slightest. HD from iTunes is 720p. If you want to fullscreen it, then it will upscale. If you want to watch 1080p, then it will downscale.
No and no. It partitions your hard drive so you can install Windows and boot directly from it. Parallels/VMWare will run Windows in a separate application under OS X.
Why does it matter? The index.html file in there is just a generic placeholder anyway. If there isn't one, create a text file and save it as index.html in the Sites folder. You're going to be modifying it anyway.
Why does it matter? The index.html file in there is just a generic placeholder anyway. If there isn't one, create a text file and save it as index.html in the Sites folder. You're going to be modifying it anyway.
How are we supposed to answer that? You're the one who knows if you have a keyboard and mouse that you want to keep as well as how much hard drive space you'll be using. Get the 4890 if you're not going to fill up more than 500GB. Get the 4870 if you will. Pretty simple.