I have a 2000 plymouth grande voyager and when I went to do all my running around yesterday the car worked fine but when I turned the car off yesterday I forgot to let the window up so when I went to turn the car back on the steerning wheel was locked and the key would not turn tried turning the wheel and key tried greasing the key nothing is working please even tried hitting the key didn't work

The steering wheel was held against the tire position when it the key was turned off. Simply pull the steering wheel in the direction it was held as you turned off the engine. Try try pulling the wheel left as you try to turn the key on and if that doesn't try pulling to the right as you try turning the key. My wife had me drive to the shopping center when she did the same thing. Just apply turning pressure to the steering wheel as you turn the key. No great strength is involved. Don't force it. A little jiggle is all it takes.

The steering wheel was held against the tire position when it the key was turned off. Simply pull the steering wheel in the direction it was held as you turned off the engine. Try try pulling the wheel left as you try to turn the key on and if that doesn't try pulling to the right as you try turning the key. My wife had me drive to the shopping center when she did the same thing. Just apply turning pressure to the steering wheel as you turn the key. No great strength is involved. Don't force it. A little jiggle is all it takes.could it b the computer n da car tried what u told me still didn't work need help bad

It is definitely not the computer. It is in the steering column/lock cylinder. A local locksmith or a car mechanic is your best source for help.