I hope it's this easy:
Close Internet Explorer.
Open the Run box and enter:
notepad %WINDIR%\system32\drivers\etc\HOSTS
Select all and delete so you have a clean page, then paste the text between the lines:
-----------------------------------------------------------------------------------------------------
# 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
-----------------------------------------------------------------------------------------------------
Save. Restart IE and test.
ju.c
"Cloverb" <Cloverb@discussions.microsoft.com> wrote in message
news

05F9A55-1368-49C4-85B8-D80D6F246483@microsoft.com...
> For the last few days when I've gone onto Yahoo internet pages my computer
> often tries to redirect to http://ad.yieldmanager.com/st%3Fad_type. From
> what I've read I understand that ad.yieldmangaer is malware / spyware but
> I've had my Norton running all the time, I also have SpyBot SD and Windows
> Defender. None of these seem to notice it's there, block the infection or do
> anything about removing it. Please can anyone heip. Thanks