installing 2.4

[Jive]

I just now installed 2.4.  I naively copied my site-package from 2.3.  The
first program I tried to run, which uses the gnuplot package, got this
error, complaining about module Numeric:

ImportError: Module use of python23.dll conflicts with this version of
Python.

Grumble: Why does Numeric reference a module by release number?

My real question is, what all do I have to do in order to get the programs I
ran under 2.3 to work with 2.4?