Hello,
For your account:
Please run HijackThis! and click "Scan." Place checks next to the following entries, if present:
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Bar = http://red.clientapps.yahoo.com/cust...search/ie.html
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Page = http://red.clientapps.yahoo.com/cust.../www.yahoo.com
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Search_URL = http://red.clientapps.yahoo.com/cust.../www.yahoo.com
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Search Bar = http://red.clientapps.yahoo.com/cust...search/ie.html
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Search Page = http://red.clientapps.yahoo.com/cust.../www.yahoo.com
R1 - HKCU\Software\Microsoft\Internet Explorer\SearchURL,(Default) = http://red.clientapps.yahoo.com/cust.../www.yahoo.com
O16 - DPF: {B64F4A7C-97C9-11DA-8BDE-F66BAD1E3F3A} - http://download.cdn.winsoftware.com/...reeInstall.cab
Close all browsers and other windows except for HijackThis!, and click "Fix Checked".
Reboot your computer.
Run ComboFix, please, and post the results along with a new HijackThis log made in normal mode.
On to the next account..................