AVR-Chat

Hi

I have an ATmega128 utilizing the ADC to read voltage from a 
thin film vibration sensor that generates voltages from 0 - 70V.

Im currently using a simple resitor voltage divider to scale down
this 0-70V to 0-5V. To protect the ADC pin, i have a 5V Zener 
across the ADC input. 

Question: is this set-up sufficiently protected? 
any suggestions?

Thanks in advance for the help.

chris