online-software scanner/redirect

Earlier this week the links on Google started redirecting to the wrong website. I completed the "read and run me first" and the "Windows XP cleaning" instructions and thought the issue was fixed. I was mistaken as the issue is still there. I have to click on a Google link four times before it works (the first three clicks direct me to the wrong website). Also today, I got a window that directed me to the website "online-software-scanner.biz." (see attached screen shot).

I've completed the Windows XP cleaning instruction again and have attached the logs. There's no combofix log as I was unable to download the program.

Thank you in advance for your help.

 

Thank you for getting back with me.

I'm a little confused as to why the programs were out of date since I had (or thought I had) followed the XP cleaning procedures word for word. In any case, here's what I've done.

-Uninstalled SAS and reinstalled it. Log attached
-Downloaded ComboFix from the link you provided. Ran ComboFix from desktop. Got to the "scanning for infected files screen" and after a few minutes saw this... "NIRCMDC is not recognized as an internal or external command, operable program or batch file" and "MTEE is not recognized as an internal or external command, operable program or batch file." I let the computer sit for over an hour and nothing else happened. For the record, I did not touch the computer while ComboFix ran, but just in case, ran the program again and the same thing happened. My clock still shows military time.
-Downloaded MGTools from the link you provided and installed it over the existing file as requested. Ran MGTools from the C drive. Not sure if this is important, but the last thing the program shows is..."Zipping hijackthis.log updating hijackthis.log" and nothing else happens.

Also, my apologies as I can't manage to save the screen shot I mentioned in my first post in a format in which the file is below the allowed attachment size.