Touch Screen problem

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http://androidforums.com – Hey guys I've had a Samsung Galaxy Gio for 4 or 5 months now, and today a very tragic accident happened which resulted in my phone falling two flights of stairs and smashing on the ground. Now the actual phone is ok, has a minor bump on the top right corner of the phone and the screen has no scratches at all. But the touch screen isn't working. Wherever I touch it always thinks I'm touching the middle of the screen... Is there any possible fix for this, or am I going to need to get a new one? (General)