Maybe some one can shed some light ... So my question is, does the iphone 3G look for a certain type of usb connection before deciding to charge, ie does itunes need to be installed? or what is going on?? I have a new iPhone 3G, when i plug it into my macs (3) it will charge fine, when i use the wall charger (5v adapter) it works fine. Charges fine on the kaboom (stereo) as well. However When i plug it into the work PC it wont charge ( windows 2000/no itunes ... ? ) when i plug it into my usb hub (when not plugged into the mac) it wont charge, but it has power because my ovatel usb modem will boot. I have an inverter with a usb port for powering usb devices, it wont work either. Any ideas?