You don't have it and you want to try it, why?

The Google Toolbar is no longer supported by Google in Firefox 5 and up, you may be able to get what you want from it for a limited time, the directions to install the Google Toolbar were posted before Google actually announced dropping support.

• Enable Google Toolbar in Firefox 5
  http://googlesystem.blogspot.com/2011/06/enable-google-toolbar-in-firefox-5.html
• the-edmeister posted a brief evaluation of the situation
  https://support.mozilla.com/en-US/questions/841736

In any case you will can find some alternative solutions, see

• "Using Google Toolbar features without toolbars"
  http://kb.mozillazine.org/Using_Google_Toolbar_features_without_toolbars

Thanks much for the helpful information and links; it certainly doesn't seem worth pursuing the Google Toolbar. I had just come across a description of Google Toolbar, and it seemed to have some obvious features that I thought might be useful; I'm a naive enough user of Firefox that I haven't really explored what its potential is - but I'll look into it.

Please click the Solved It button next to the answer that answered or solved your Firefox support issue, it appears when you are logged in, so this thread gets marked as Solved to help other users who may have this same problem.