My camera was dropped on the floor, now everytime I turn it on it says lens error on the screen and the lens itself will not detract when turned off.

Focusing mechanism might be either broken and jumped out of its place
1) Take a screwdriver and open it yourself (it's not that complicated, as soon as you don't lose any parts; just try to remember where every part lies in).
2) When after opening the case you still don't understand how the focusing mechanism functions try to place battery inside, switch it on and then you'll see what exactly is blocking the focuser from moving back and forth.
3) Either place the focusing mechanism back correctly or if something is broken that you can fix with a SuperGlue - do it.
P.S. I once had the same problem after dropping my photo camera (Canon PowerShot G7), but the focusing mechanism was broken so had to go the mechanic to replace it. Mechanic normally wouldn't object that you have already disassembled the camera - less work for him.