Probleme avec Windows 7 x64

[sami]

C:\itrade>itrade.py
iTrade(alpha) - 0.4.6 Nausicaa2 - (official) (r836)
Psyco is running
User Configuration : C:\itrade\usrdata\usrconfig.txt
XLRD package (http://www.lexicon.net/sjmachin/xlrd.htm) not installed.
wxPython Selected  : 2.8-msw-unicode
Traceback (most recent call last):
  File "C:\itrade\itrade.py", line 221, in <module>
    main()
  File "C:\itrade\itrade.py", line 202, in main
    import itrade_wxmain
  File "C:\itrade\itrade_wxmain.py", line 48, in <module>
    import wx
  File "C:\Python26\lib\site-packages\wx-2.8-msw-unicode\wx\__init__.py", line 4
5, in <module>
    from wx._core import *
  File "C:\Python26\lib\site-packages\wx-2.8-msw-unicode\wx\_core.py", line 4, i
n <module>
    import _core_
ImportError: DLL load failed: %1 is not a valid Win32 application.

[sami]

http://www.lexicon.net/sjmachin/xlrd.htm installe et pourtant toujours rien