Tip: If you haven't installed Google Chrome, go get it first.
Now, in your Chrome browser, choose one of the following PIE editions to install. They're free.
After installation, a Quick Start Guide will show up to get you started :-)
Screenshots
Here are some screenshots showing PIE (International Edition) transforming the Wikipedia article Hamlet in Full, Lite and Extra Lite modes :-)
Full Mode
Lite Mode (the default mode)
Extra Lite Mode