하드웨어 센스부족을 설치했는데요...

웹서핑하다가 광고들. 더구나 낯뜨거운 광고들 뜨면 참 난감하죠..

검색하다 센스부족을 설치했는데요.. hosts파일을 열수 없다고 나오네요..

이게 뭔소린지?? 메모장으로 열어보면

# Copyright (c) 1993-1999 Microsoft Corp.
#
# This is a sample HOSTS file used by Microsoft TCP/IP for Windows.
#
# This file contains the mappings of IP addresses to host names. Each
# entry should be kept on an individual line. The IP address should
# be placed in the first column followed by the corresponding host name.
# The IP address and the host name should be separated by at least one
# space.
#
# Additionally, comments (such as these) may be inserted on individual
# lines or following the machine name denoted by a '#' symbol.
#
# For example:
#
#      102.54.94.97     rhino.acme.com          # source server
#       38.25.63.10     x.acme.com              # x client host

127.0.0.1       localhost

#block wga
127.0.0.1 mpa.one.microsoft.com

이렇게만 나오네요.. 뭐가 잘못된건가요??