Delu:sional 0 Newbie Poster

I just installed eclipse and Pydev. but I can't I can't add Python 2.7 as the interpreter for Pydev. I couldn't find the interpreter file at 'mac/usr/local/bin/' I only see /python 3.1 and some others. Is it because of I have installed 3.1 and 2.7 both? Even then I click python 3.1, but the window does not allow me to click OPEN button.

I have been looking for how to uninstall python 3.1 but can't find anything. Can I just delete the folder then all problem will be solved? please help me :'(

thanks