From the management interface, click on the control panel. If it isn't even starting up because you have the wrong python, then you'll have to do it the usual UNIX way, with "which" or python -V.
FWIW, both of the versions you have are bad choices for any moderately recent Zope. You want 2.1.3.
I checked the python version of my zope and is 2.1.3 and now I'm really confused. I copy all the things I need to the usr/lib/python2.2 directory, but as I can see now python uses the python located in /usr/local/Zope/lib/python2.1/ so I have to move all things in there or is the /usr/local/Zope/lib/python2.1 should be in /usr/lib/ I'm really confuse now about that . What is the best way to have my zope, I followed the instructions in the INSTALL.TXT and don't say anything about that matter thanks in advance Gerardo