If you're having trouble with Alienware TactX Drivers... (windows 8.1)

 I found a way to use the drivers. First of all, download the drivers from here: http://www.dell.com/support/drivers/us/en/19/driverdetails?driverid=6TVN9

Then run the setup as an administrator and put it in compatibility mode for Windows 7, then click when launching MouseCI, be sure to do it as an administrator, and put it in compatibility mode if it helps.