Redirection is always another bug buried in your system, the two programs below are two of the best. They both have free versions and are well worth having on your machine.
http://www.malwarebytes.org/mbam.php
http://www.superantispyware.com/
You are also entitled to down load Microsoft Security Essentials, it is a free full security suite that covers all the bases. I have been running it for about 7 months it has worked flawlessly, and obviously designed and written by the maker who's product it protects.
http://www.microsoft.com/security_essentials/
No matter what your beliefs are "GOD BLESS AMERICA"
Fully retired marine tech near 60 years in the biz.