I downloaded and installed this version of wxPython for use with my Python 2.6 installation:
http://downloads.sourceforge.net/wxpython/wxPython2.8-win32-unicode-2.8.
you try to use the module wxpython 2.8.12.1 version, select the version of your python. you can download it here:
http://www.lfd.uci.edu/~gohlke/pythonlibs/#wxpython