wxPython under linux

[Daniel]

I've installed the wxPython rpm under RH 6.0
and I'm having the following problems.

First, python can't locate the main module.
wx.py is located in /usr/lib/python1.5/site-packages/wxPython.
I've tried adding this path to PYTHONPATH but it
still has no effect. 

Second, I can copy a simply script to the wxPython
directory and run it from there, however, if I'm 
under KDE it fails with X-errors.  If I switch to 
a generic window manager the script runs fine.

Has anyone else had these problems?
Can you offer me some suggestions to solve them?

-Daniel