Do yourself a favor and stop using Internet Explorer is the first thing you should do. Use Safari or Firebird. As far as the ' it works fine on mine just by typing it, so mayb what you need to do is fix your keyboard settings.
Your keyboard settings and home page settings can be adjusted in your system prefs. so go click the apple in the top left corner and scroll to system prefs then select Internet for your home page settings to fix and Keyboard & Mouse to fix your keyboard.
