2000 Ford Windstar ignition key won't turn

Key will not turn in any direction I have turned the wheel moved gear shift but it won't budge. There was nothing happening before hand like turning hard or sticking it just won't turn at all. I thought maybe the chip in the key went bad ( I don't know if that is possible) but I went to get one made but figured if if the machine could read it to make me a key it was probably ok & did'nt want to give up 70 bucks for nothing. The manual I have says you have to turn the key to on to get the cylinder out so I can't even check that. Any help would be great even if it's where I should go to get it fixed mechanic or lock smith? Thanks, Tim