Jailbreak your device and get there apps from Cydia! You need them!
Auto3G – 5.99$
MyWi 4.0 – 19.99$
MyWi 4 – All New Tethering on iPhones + iPad for iOS 4.0! Includes support for 3.1+ and all iPhones (including 2G/3G/3GS) and iPad! 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! You can also use MyWi 4.0 to enable USB Tethering on 3.1!
MultiCleaner – 0.99$
MultiCleaner is an advanced housekeeper for your MutliTasking apps. It can get to be quite a pain in the @$$ managing app, and MultiCleaner is here to help. The app will allow you to quit apps with a quick activator gesture and even allows you to customize the multitasking bar to your own liking.
FolderEnhancer – 1.99$
Improves and extends iOS4 folders.
DataCounter – 2.99$
Data Counter is a simple application that allows you to track your data usage over a period of time, and allows you to set up notifications when certain conditions are met. This is a a great app for those that want more instant notification from their data tracking.