New to this group and to Wii ownership :)
When I bought the Wii, I also got RB2 "special edition" (with the
drums and microphone), mostly because I liked the look and feel of the
peripherals better than Guitar Hero.  However, I'd REALLY like to be
able to play Guitar Hero games.  I've gotten mixed messages from
various sources as to whether or not there is any cross-compatibility
between the games.  Has anyone tried?  I'd ideally like to be able to
play GH with my RB peripherals, but I'd buy a GH guitar for GH games
if I could also use it as a second guitar for RB2...Any ideas?

I bought RB2 (guitar, drums and microfone). My cousin got Guitar Hero 2.

I can use her guitar (GH2) in my game (RB2), but can't use my guitar on her
game (GH2).

The drums are definety incompatible, they are totaly different.

I hope that helps.
---
Saulo Achkar
Google Talk: saulo.ach...@gmail.com