I installed it but I still need to restart to set it up.

I have another plug-in that I use sometimes, called Reveal 1.0.6 that includes a 2" x 2" movable square that acts as an adjustable magnifying glass - just scroll the power up and down.
Reveal allows you to see thumbnails of pages in your session history and quickly find the page you want. Reveal also includes a magnifying glass to help you see everything.