I have a default Lenovo Mouse, and i want my mouse DPI at 750 how do i change it?

[MouseHelp]

So i have a lenovo Default 2012 mouse (http://www.amazon.com/Lenovo-0B46973-Optical-Mouse/dp/B007GFUQL0) link to it. And it has 1000 dpi, I want to lower the dpi WITHOUT touching the windows sensitivity because i occasionally use a mouse pad and the windows sensitivity being too low, makes it very uncomfortable. PLEASE HELP, i would like to know if there is a software or code needed to change the DPI and please put it in steps. thanks

 

[getochkn]

buy a new mouse that has multiple dpi.