Ad-Aware SE and Spybot ( http://www.download.com/ ) should both be able to fix that particular problem, did you update Spybot before running it? Did you try Ad-Aware?
Get CWShredder from:
http://www.downloads.subratam.org/CWShredder.exe
Open CWShredder, click on Check for updates, and after it's finished updating, click on Fix.
Scan with hijack this and it fix the following entries:
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = http://ie.redirect.hp.com/svs/rdr?T...ario&pf=desktop
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Default_Search_URL = http://ie.redirect.hp.com/svs/rdr?T...ario&pf=desktop
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Bar = http://websearch.drsnsrch.com/sidesearch.cgi?id=
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Page = http://websearch.drsnsrch.com/sidesearch.cgi?id=
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://ie.redirect.hp.com/svs/rdr?T...ario&pf=desktop
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = http://ie.redirect.hp.com/svs/rdr?T...ario&pf=desktop
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Search_URL = http://ie.redirect.hp.com/svs/rdr?T...ario&pf=desktop
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Search Bar = http://ie.redirect.hp.com/svs/rdr?T...ario&pf=desktop
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Search Page = http://ie.redirect.hp.com/svs/rdr?T...ario&pf=desktop
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Start Page = http://ie.redirect.hp.com/svs/rdr?T...ario&pf=desktop
R1 - HKCU\Software\Microsoft\Internet Connection Wizard,ShellNext = http://ie.redirect.hp.com/svs/rdr?T...ario&pf=desktop
F2 - REG:system.ini: Shell=Explorer.exe C:\WINDOWS\Nail.exe
O2 - BHO: (no name) - {00000049-8F91-4D9C-9573-F016E7626484} - (no file)
O2 - BHO: (no name) - {01F44A8A-8C97-4325-A378-76E68DC4AB2E} - (no file)
O2 - BHO: ohb - {999A06FF-10EF-4A29-8640-69E99882C26B} - (no file)
O2 - BHO: BolgerObj Class - {302A3240-4805-4a34-97D7-1645A0B08410} - C:\WINDOWS\Bolger.dll
O3 - Toolbar: (no name) - {2CDE1A7D-A478-4291-BF31-E1B4C16F92EB} - (no file)
O23 - Service: System Startup Service (SvcProc) - Unknown owner - C:\WINDOWS\svcproc.exe
Be sure all windows are closed, other then hijackthis, before hitting Fix checked.
Go to the following locations and delete the highlighted files:
C:\WINDOWS\Nail.exe
C:\WINDOWS\Bolger.dll
C:\WINDOWS\svcproc.exe
Reboot, close any open browser windows, scan with HJT, and post a new log please.
Do you use Viewpoint Manager?