Need help with my dad's car.

[ranj]

hey guys,
my dad just bought a 2001 saturn sl1 today its an auto. we got a really good deal on it, but there is one little tiny problem. evertime you change from park to anything else, it makes a clicking sound from the transmission area and a very small jerk (it doesn't jerk while its moving there are no problems when you get going). also the rpm shoots up by a thousand and takes a while to settle back down, i don't know if this has to do with the first part. but me and my dad have narrowed it down to either the axle (cv joint), or some hydrolic shifter thing that my dad told me about ( i don't know much about automatic trans). but before we go and change the cv joint and that other thing (which requires u to drop the transmission with these saturns) could someone who knows about this tell us what the problem is. any help would be greatly appreciated.

thanks
-ranj