昨天看了不明网站，今天上QQ就显示HOST文件被修改，而且进如空间的时间就弹出一个中奖网页

用了很多杀毒软件都行不通，我把QQ卸载了，重新装过，还是一样！请大虾指点，在线等。高分！

一般hosts的内容如下：

# 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

可以把原来的删掉，自己在C:\Windows\system32\drivers\etc新建的hosts.txt文本，复制以上一段，然后以hosts为名字保存。去掉TXT后缀名

或者用以下方法去后缀名
(点击“开始”→“运行”，键入“cmd”，输入c:\Windows\system32\drivers\etc，再键入dir查看当前目录下的文件，输入ren hotsts.txt hosts命令轻松的就把hosts文件的后缀去掉了。