Most likely you're trying to do this as a non-root user and /usr/local/lib/python2.4/site-packages must be writable only with root privileges.
If you cannot go root on that machine then you could just install the package in some directory you can write to and add the directory name to your PYTHONPATH environment variable. Cheers, Miklos -- Software development: Python,Zope,Plone,PDF,XML,MivaScript http://www.jegenye.com -- http://mail.python.org/mailman/listinfo/python-list