Upgrade 2.2.2 to 2.3.3: Keep my old 3rd party modules or rebuild them or reinstall from scratch?

[Eduardo Bernal]

I'd like to upgrade to 2.3.3, mostly to use VPython. I have a lot of
stuff not in the standard distro,
VPython, PIL, wxPython, eGenix tools, etc. How much of this stuff can I
still use as is, i.e. just copying over the 2.2 site-lib stuff to the
2.3 site-lib stuff? What will I have to rebuild? TIA

Ed 
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