Hopefully you came upon this through ScoreHero, if not, please register at ScoreHero.com and go here to view the original thread and learn about modifying Guitar Hero 2, as it is a fairly complicated process.
This site was created purely for file hosting purposes to have more control over the layout and distribution of the files I've created. It is not for instruction or support on modifying GH2. Much information is contained in the ReadMe files available in the Zip file that pertains specifically to this project, but general queries can be easily answered by reading the guides at ScoreHero.