Download KillBox (
http://www.greyknight17.com/spy/KillBox.exe). Run KillBox and check the box that says 'End Explorer Shell While Killing File'. Next click on 'Delete on Reboot'. For each of the following files below, check the box that says 'Unregister .dll Before Deleting' if it's not grayed out. Copy and paste each of the following into KillBox (hitting the X button for each file - choose NO when it asks if you want to reboot):
C:\WINDOWS\System32\searchsetter[1].exe
Reboot and post a fresh HJT log.
Also........
Download StartDreck
http://www.greyknight17.com/spy/StartDreck.zip
Unzip to its own folder and start the program:
Press 'Config'
Press 'mark all'
Uncheck the following boxes only:
System/Running Process -> List Modules
System/Drivers -> NT Services
System/Drivers -> NT Kernel- and FS-drivers
Press 'OK'
Press 'Save' and select the location to save the log file (default is the same folder as the application)
Post the log in this thread.