If you would feel comfortable following the steps in this guide right here then go for it, it's almost guaranteed to solve your problem.
[guide|3639]
If you want to go ahead with it you can find your part on eBay here:
[guide|3639]
if you have a black one. If you have a white one,
http://www.ebay.com/itm/270945846612?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1439.l2649
Best of luck. It's not as hard as some people say. Just be careful and steady, don't push or pull too hard, and use common sense.