One thing you'll want to make sure of before you get too far, is that you're running the latest operating system from Nokia. Open the control panel, open Device, open the About Product tab. 2.2005.45-8 seems to be the latest right now.

Answers:
1)no
1)yes, if you want to hack some system files
1)no, but maybe in the future they'll fix this oversight in an update.
2)all you get is an icon in the top right corner that looks like a battery with a chart behind it. The chart has four bars that indicate charge.

edit: it's always the simple stuff.