For starters you should dowload the current release of DTC Remover from the download section and unpack the archive with WinRar (or your prefered software). In the example I have unpacked the file to my desktop.

Inside the main folder "DTCRemover" you will find another folder named "Drivers" and inside this folder there is a program named "InstWiz3.exe". This program will install the usb dongle drivers on windows xp/vista/7/8 32bit and 64bit.

The usb dongle should remain disconnected during driver installation.