Visual Boy Advance GX is a Game Boy Advance / Game Boy emulator for Wii and GameCube based on VBA-M.

Changes:

* Fixed ROM allocation. Should solve some unexplained crashes
* Numerous performance optimizations (thanks dancinninja!)
* DVD / USB 2.0 support via IOS 202. DVDx support has been dropped. It is highly recommended to install IOS 202 via the included installer
* Multi-language support (only French translation is fully complete)
* Thank you to everyone who submitted translations
* SMB improvements/bug fixes
* Minor video & input performance optimizations
* Disabling rumble now also disables in-game rumbling
* Fixed saving of GB screen position adjustment

Source: http://www.wiibrew.org/wiki/Visual_Boy_Advance_GX

http://code.google.com/p/vba-wii/