Here's the link for the free EasyGoBack software that adds extra options to your mouse. Click on the link, then scroll to the bottom of the page for more information about the program and the download:
Hope this helps.
At one time I had the wheel of my mouse programmed to go BACK when clicked on. I recently had to do a System Recovery and now that programming is lost and I can't remember how I did it. I can't find any info on this either.
Thanks for some help.