MyWi 4.0 - Rock Your Phone

MyWi 4.0 - Rock Your Phone: "Create a WiFi HotSpot with a press of a finger! Wherever you are - you can connect your laptop or other mobile device to your iPhone easily. MyWi has been rebuilt from scratch to bring tethering support to iOS 4! Will work with all jailbroken iPhones (including 2G/3G/3GS/4) and iPad on 3.1.2 or later."