Finally got my 3pi/m3pi board working with the PC Pololu terminal program.
Note to people as dumb as me: Put a note at the top of the slave program that you must set your BAUD rate to what is in the program, or as I did set the terminal and the program to 9600 for safety now. It is way down in the program and I finally noted it. I can barely ‘spell C’ programming, BTW.
The program appears to work fine, but I want to know where does it
TURN THE RED LED ON
TURN THE GREEN LED PARTIALLY ON
Whoops, I just noted that PD1 is both the RED LED and the TXD line. That explains that. But PD7 is shown as an output to the GREEN led and to DB7 of the LCD. On the Atmega chip it is shown as PD7 (AIN1) an analog input??
Not a problem but I spent/wasted a lot of time trying to get them turned off until now. 
Finally having fun.
Bo