Replacing Door Lock Actuators

I'm having issues with trying to lock my driver's side door.  I now
have to turn the key and push down of the button at the same time to
get the door to lock.  The power door lock actuator is jacked, right?
(I hate electric powered option crap.)  How tough is it to replace
these?  I'm also thinking about changing out the power window motors
while I have the door panels off.  Anyone go through this?  How tough
are these jobs?  Please advise.

Patrick
'93 Cobra