Tom, Before you use iMatrix[index], you have to tell python to use iMatrix as an array. You will do that using iMatrix = [] *outside* the loop.
iMatrix = [] while index < majorlop1: # rest of the loop statements Since you are new, please take a look at the Python tutorial to get you started. http://docs.python.org/tut/tut.html Thanks, -Kartic -- http://mail.python.org/mailman/listinfo/python-list
