Run HiJackThis and place check marks next to the following entries:
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Search Bar = http://red.clientapps.yahoo.com/cust...ch/search.html

R1 - HKCU\Software\Microsoft\Internet Explorer\SearchURL,(Default) = http://red.clientapps.yahoo.com/cust.../www.yahoo.com

Once you have placed the check marks click the Fix Checked button.
Exit HJT
I was able to download SDFix, but I cannot get it to run. UGH! What now?
You must run it in safe mode. Have you tried that?