Computer Won't Recognize iPhone
The computer recognizes the charger, so its not the cable.
The charger recognizes the iPhone, so its not the iPhone input.
The computer doesn't recognize the iPhone directly.
When you plug in the iPhone to the computer, it usually goes "doon-din" (my impression of the sound. Its basically a lower pitch then a higher pitch. When you take it out, it usually does the opposite ("din-doon"). When I plug my iPhone into my computer, I hear three quick "doon"s as in 3 rapid lower tones. The unplugging sound is the same as usual.
However, my iPhone will not charge from the computer directly, nor will it show up in iTunes or even in the hardware section.
Dell XPS 410, Windows XP