This video tutorial will guide you on how to set up and change the settings of your iPhone 3G. So that you can personalize the settings of your iPhone such as airplane mode, Wi-Fi, fetch new data, brightness, wallpaper. It will also show how to personalize the sound setting of your iPhone such as increasing or decreasing the volume, vibrate mode, ringtone, new text mail, new voicemail, sent mail, calendar alerts, lock sounds and keyboard clicks.
Source:
http://www.youtube.com/watch?v=gilHbntnq90&feature=player_embedded