Spinning starter

[mobenz]

I am actually working on another issue, but when I use a screwdriver to jump the terminals on the starter solenoid, it just spins, and doesn't engage. Does this indicate it is bad? Initially, I am trying to trouble shoot a starting issue on my 300CD, which is that is I get nothing when the key moves the Start position. I am trying to determine if it is an ignition switch, neutral safety switch or starter issue.

Any help greatly appreciated.