The Gameboy4iphone has been released on installer. For those of you have been patiently waiting for an installer version, the wait has just ended. You can now go into your installer and install Gameboy4iphone v1.7.0.

If you don’t have the repo for emulators, add to your source list.

These posts will help you add Gameboy/GBC ROMs your iPod Touch:
iPod Touch: Add 1400+ Gameboy / GBC ROMs using iShare / Sendspace
iPod Touch: Gameboy / GBC ROMs Repo (Source)

If you have any questions please go over to the forums and post them.

Enjoy your new Gameboy4iphone!