Sometimes, the iPhone 3G gets so frozen that the standard force quit process for programs doesn’t work. In that case, you’ll need to reset the iPhone.
To do that, hold both the sleep/wake and Home buttons together for at least 10 seconds.
The red shut down slider will show up at the top of the screen and then disappear. Keep holding the buttons. The screen may even go black, but don’t let go of the buttons until the Apple logo shows up. When it appears, let the buttons go and the phone will start up normally.
