new drive shafts fitted but still shaking and wobble that shake the front of car and steering

have you checked tie rods ball joints steering arm?

Hi did you solve the problem. My dad has just bought a 2000 renault scenic and he has got the same problem when you put your foot down the whole front end of the car wobbles but as soon as you take you foot of the pedal it stops. So if you solved the problem please could you let me now what it was that caused it
Thanks
Donna