Waxy.org points to a site that shows you how to make your custom songs for Guitar Hero 2… Sottle @ the ScoreHero forums writes –

“It should be idiot proof, because i can do it…

I decided to do this because there is some incredible work going on and peoples creations deserve to be played, so i thought a simple one stop guide would encourage more people to try it out.

I’m going to attempt to write this guide so that the level of prior knowledge required is zero. So forgive me if you read this and think a lot of stuff is obvious.

Firstly let me state this guide will only help you with getting other peoples created songs into your Guitar Hero 2 game It Contains no information on creating custom notecharts.” [via] – Link.

Some file converting and hex editing and you’re set!