Our writers have already come up with a guide for both Cydia and Installer to aid anyone who needs help with the unlocking process of the iPhone 3G.  Remember though you MUST jailbreak your iPhone 3G before you will be able to unlock it.  Also keep in mind that this is currently a beta so there can potentially be problems in which case you need to direct any bug specifications to the Dev-Team at blog@iphone-dev.org.

 In case you still need to jailbreak your iPhone 3G here are those guides: