Problem with IE

[deviljace]

Hi Guys, need your help here please, i got this problem when i am surfing the net.
when surfing the net and clicking on a link,another window popups and appears with google search results
i didn't install google tool bar before.sometimes while searching with yahoo,it will then switch to google search engine.
i am also having a "2.html" file, which i did not save, in C drive

[guestolo]

Can you post a hijackthis log please
Just to get a closer look

Download Hijackthis from my signature below
SAVE it to your desktop

Double click on hijackthis_sfx.exe on desktop
Click the UNZIP button>>OK the prompt
This will self extract to C:\Program Files\HijackThis
Delete hijackthis_sfx.exe from desktop

Go to START>>RUN
Copy>>paste the following to the open field, then hit OK
%systemdrive%\Program Files\HijackThis
This will open the Hijackthis folder
RIGHT CLICK on Hijackthis.exe and select SEND TO>>Desktop (create shortcut)
You can now run Hijackthis.exe from the new shortcut placed on your desktop

Double click to run Hijackthis.exe
Do a "SCAN and Save a Log file"
A log will open in Notepad
Copy and paste the WHOLE contents of the log  here... Don't try and fix anything---It is all important