So how does this thing vibrate? The whole system is based on using input from your sound card and translating that to vibration mechanics at the rear of the mouse. Your sound card makes noise... the mouse shakes. The intensity and frequency of the vibrations are directly related to the audio stream coming from your audio card. There is a small dial at the front of the mouse which is used to adjust the intensity of the mouse's vibrations.
Since it's sound card driven, adjusting the volume of the audio output can greatly increase the amount of vibration of the mouse. We had it practically jumping around the table at one point. The vibration intensity dial can also be used to temper or increase the magnitude of the vibrations to achieve a level of sound/vibration that you're happy with.
Software:
Only being a mouse there really isn't much software that needs to be installed. The included software has all the standard mouse stuff, everything from manipulating the double-click speed to the function of the wheel. All pretty standard stuff in terms of controlling the function of the mouse, about what you would expect. Since all vibrations are handled by the hardware internal to the mouse and driven by the sound card, the operating system really just sees this as a standard mouse.
For your enjoyment, the Vmouse also includes a test program that allows you
to tweak your mouse's intensity settings. The testing software consists of a
collection of sounds, everything from gunshots to snoring, and will let you get
a feel for how the mouse reacts to singular sounds. Because the testing software
only plays one sound at a time it's very easy to see the sound's 'feeling'
conveyed by the vibrations of the mouse.