there isnt a specific driver to install for the tuner except for the DHP software. you do need the correct version of net.framework and something else.... it is on the DHP website. if you dont have access to it you need to get the log in off of the person who sold you the tuner or find a link where there are a few people updating users permissions. there are instructions on there to go thru the steps needed to load the proper windows drivers before installing the DHP software.