I am using Windows 7. I used to be able to switch mouse buttons, i.e. use for left handed in Mouse Properties as you can in attached image (Switch primary and secondary buttons).
Now I get another menu and I do not know how to switch the buttons there.
I would most like to get the Default menu back, but I do not know how.
The reason I got this new Menu is that I used another mouse on the computer and propably it downloaded new software.