Window supports filenames up to 32K characters.  See
http://msdn2.microsoft.com/en-us/library/aa363858.aspx and
http://msdn2.microsoft.com/en-us/library/aa365247(VS.85).aspx for info.

Python appears to support this as of 2.5*.  Maybe support for people using 2.5
or later could be added by prefixing "\\?\" to the path (I believe).

*http://mail.python.org/pipermail/python-bugs-list/2007-March/037810.html