好像和HOST文件有关，这个是HOST文件的内容：
# Copyright (c) 1993-2009 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
# localhost name resolution is handled within DNS itself.
# 127.0.0.1 localhost
# ::1 localhost
还有系统是Win7家庭普通版，曾经用这个笔记本做过无线接入点，安装了VMware虚拟机。
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因为你这个hosts文件每条前面都有#号，代表不生效的意思！～WIN7安全性比XP要高，所以有时候会麻烦点！～
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同楼上