Question about Keyframe view

How do you get keyframe view to toggle on and off in the 3d view? I know that it was the K key in past versions of blender, but I am using blender 2.59 and the K key doesn’t seem to do anything.

Does not exist in 2.59
You can have a look at the motion trails addon http://wiki.blender.org/index.php/Extensions:2.5/Py/Scripts/Animation/Motion_Trail

Ok thanks .