baza999, The hosts (no extension) file located in your C:\WINNT\System32\drivers\etc folder for Windows XP comes as shown below between the lines.
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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
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If you have downloaded some type of Spyware Removal Program it may have added those porn links so that you can't access them as a safety precaution or did you download another hosts file for protection against porn sites which are responsible for most spyware/adware/malware/hijackers entering your system? There are some viruses/trojans that add entries to AV sites/Spyware Removal Programs sites/etc. so that you can't reach any of them to fix the viruses/trojans and what you have to do is go into the hosts (no extension) file open it in Notepad and delete all entries below the 127.0.0.1 localhost.
DO NOT delete the 127.0.0.1 localhost.
Close Notepad and accept the changes when it asks, then right click the HOSTS (no extension)file, choose Properties and put a checkmark in front of Read only, click Apply/OK. This will prevent anything from altering it or writing to it.
HTH,
Tufenuf