Help!!! usb port not working

[medic319]

I came home today and plugged my mogul into the charger, and the battery will not charge. It will not charge with my USB cable either. I would take it back to Sprint in the morning, but I am sure they will not like the "Test Only Not for Sale" when they start my phone. I have tried to hook the phone up to my computer to load an official ROM, but my computer says that there is nothing connected. Should my phone take a swim before my visit to sprint tomorrow, or can I load something onto my SD card to upgrade? Thank you for any help you can give me.