The OP really needs to clarify exactly what is taking place.
If the shift lever moves into the Drive position, but the transmission does not seem to engage, then Barkydog's scenario is a possibility.
On the other hand, if the OP is trying to tell us that he is unable to move the shift lever out of the Park position, then I think that the shift interlock solenoid is defective.
Russharv--which of the above situations is taking place with your car?
As usual, the devil is in the details, and the essential details are missing.