I have a honda civic which just got its rear fender smacked by someone(thing)

. The damage was done to the very bottom of the fender too so I have no idea what the hell hit it. As a result the normal curve of the rear fender as is travels from the back to the side of the car is now a right angle knocked into the fender.

I figure I can fix it myself for a few reasons: (1) its plastic, (2) the car shop will keep for at least a week and I need my ride, (3) car shop would want me to change the entire fender probably and (4) I am too broke (and a bit cheap) to repair something of which over 90% is still in perfect condition.
I figure this would be great as my first DIY so any help or suggestions will be very much appreciated.. Thanks.
I'll put pictures up as soon as I get my hands on a digital camera.