I have Guitar Hero III, and two Guitar Hero III White Les Paul controllers. I have a couple of questions: 1. Can I use these GH III controllers to play Rock Band 2? Just the guitars, no other instruments. 2. When the ACDC Track Pack is released for Wii, will I be able to use my Guitar Hero III controllers to play that game? My guess is yes because the ACDC track pack is a recent release, and Rock Band 2 is compatible with Guitar Hero III controllers according to this chart. http://www.joystiq.com/Instrument-Compatibility-Matrix/ This chart has been useful, but does not answer all of my questions. If you could answer these questions that I have, that would be of great help. Thanks.