HELP PLEASE-issue connecting to usb port- usb port does work

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http://forum.xda-developers.com – Phone: Tmobile T959 aka Samsung Vibrant It is on stock Froyo 2.2 It has the 3E recovery. I tried on 2 computers but I can NOT connect via USB it gives me USB malfunction error. The phone does charge. I can put it into download mode vie the 3 finger trick. When you connect it does give you the option to click the green Android icon Connect to USB. So it is talking to the computer, the usb is not totally dead. Problem: I need to root this phone. I can not use 1 click or anything else because I think there is a problem with the USB port. I can get files onto the phone via wifi or using (HowTos)