If you are looking to unlock an iPhone for use on a network other than the network allowed in your country, Unlock.no has the easiest solutions. It's an all-software solution, so no mods are needed to your phone. It works with the 1.1.3 version of the firmware, and the unlocking process takes less than 5 minutes. There's even a GUI interface to walk you through the, very few and simple, steps need to unlock your iPhone. It really doesn't get any easier than this.