Resoldering the port
If the USB port has been bent out of place it will most likely need resoldering. You could attempt this yourself if you are competent, but it is recommended that you seek a computer specialist to do this for you.
Using an Adaptor as an alternative
If you don't want the cost of a repair and have another working USB port on your computer you could use a multi-port adaptor. You simply plug the adaptor into a working USB port (see below).Alternatively if you have a laptop with a PCMCIA slot you could use a PC Card Bus.