WinXP vs. Win98

[sidanko at scientist.com]

I use Python 2.3.3 (Enthought edition) with wxPython and it is
installed on both WinXP and Win98. On Win98 machine I have the
following error:
------------------------------------------------------------------------
Traceback (most recent call last):
  File
"C:\PYTHON23\Lib\site-packages\pythonwin\pywin\framework\scriptutils.py",
line 310, in RunScript
    exec codeObject in __main__.__dict__
  File "C:\My Documents\Programs\Python\SDV.py", line 2, in ?
    from chaco.wxplot import *
  File "C:\PYTHON23\lib\site-packages\chaco\wxplot.py", line 17, in ?
    from wxplot_window import PlotWindow, PlotTraitSheet
  File "C:\PYTHON23\lib\site-packages\chaco\wxplot_window.py", line 5,
in ?
    from wxplot_window_agg import *
  File "C:\PYTHON23\lib\site-packages\chaco\wxplot_window_agg.py", line
27, in
    from kiva.agg               import CAP_BUTT
  File "C:\PYTHON23\lib\site-packages\kiva\agg\__init__.py", line 1, in
?
    from agg import *
  File "C:\PYTHON23\lib\site-packages\kiva\agg\agg.py", line 734, in ?
    import freetype
  File "C:\PYTHON23\lib\site-packages\freetype\__init__.py", line 6, in
?
    from freetype import FreeType
  File "C:\PYTHON23\lib\site-packages\freetype\freetype.py", line 10,
in ?
    from font_lookup import default_font_info
  File "C:\PYTHON23\lib\site-packages\freetype\font_lookup.py", line
24, in ?
    font_dirs.append(os.path.join(os.environ[ 'systemroot' ],'fonts'))
  File "C:\PYTHON23\lib\os.py", line 417, in __getitem__
    return self.data[key.upper()]
KeyError: 'SYSTEMROOT'
>>>
-----------------------------------------------------------------------
Hovewer running very the same script on WinXP machine I have no
problems at all. What's wrong? Kiva package (as well as others) is
installed properly. Where to dig?

AS