'Returns the filename for the nag file for this user.'

@staticmethod
def MakeNagFilename():

    user_homedir = os.path.expanduser('~/')
    if (not os.path.isdir(user_homedir)):
        (drive, unused_tail) = os.path.splitdrive(os.__file__)
        if drive:
            os.environ['HOMEDRIVE'] = drive
    return os.path.expanduser(('~/' + NAG_FILE))
