javagamer,
To replace the part you would have to release the 4 mount points and the solder from the 5 wire cable connection. Clean and remove all the old solder and then refit and solder a new 5 pin mini usb connector.
This is not an easy job and certainly not something you should attempt without experience in this type of repair as you could easily damage the mainboard and make the problem worse.
An electronics or mobile phone repair center may be able to help.