I'm trying to connect my iPhone 3g running 3.0 firmware to an ad hoc network on my Macbook Pro running OS 10.5.7. After I setup the ad hoc network on my computer, the ssid shows up on my phone fine. But, when I try to connect to the ad hoc network my 3g icon in the top left corner of the phone never changes to the wifi icon. So it basically never connects. I really just want to be able to use the iTunes remote app on my iPhone without a "real" wifi connection. Is there anything special you need to do to connect your iPhone to an ad hoc wifi connection? Has anyone done this?