Hi,
Tweakie is right, get an end cutting endmill.
I use MillWizard ($75) from NFS. When it generates code to say create a pocket it ramps down to the depth
rather than just plunge. May I suggest download and experiment with it and you will see the code used to
enact the ramp down.
Note also that most if not all CAM programs offer different strategies to ram an endmill down to depth.
Craig