Step 1: Destroying Mouse

Step 2: Making the Box

Step 3: Making Connections

Step 4: Software

Sakasa Mouse
This program serves to reverse the mouse movements.
When we make the trackball home, we must reverse the left-right movements.
The up-down movements are not altered by changing the mouse.
It can also be useful to use the mouse in a specific angle, changing the grades on the application.
Here you can download the application:
http://hp.vector.co.jp/authors/VA026826/sakasa103.zip

X-CONTROL mouse button
With this program we can provide custom functions to our buttons.Especially useful if, apart from left and right button, you have more buttons.

Here you can download the application:
http://www.highrez.co.uk/scripts/download.asp?package=XMouse

I hope that helps someone.
Sorry for my english.