I make and sell the USB data link cables if you want to consider me among your options (see my profile). The cable comes with a User Guide to help you get started with the main tuning programs ECMSpy for Mono and Tunerpro RT.
Tunerpro RT and the Buell plug-ins are available from http://www.tunerpro.net/. You can get a demo version of ECMSpy, or purchase the full version, from http://www.ecmspy.com . I do not sell or distribute either of these software packages as doing so is unlawful.