Will ask you to do the following first & then move HijackThis into it's own, permanent folder.
Download & instal Adaware from http://majorgeeks.com/download.php?det=506
& update it B4 scanning.
In settings under 'scanning,' have it set to
'scan within archives,'
'scan active processes,'
'scan registry,'
'deepscan registry'
'scan my IE Favourites for banned URL's,'
'scan my host's file.'
Also in tweaks under 'cleaning engine' set it to 'Automatically try to unregister objects prior to deletion.'
Remove what it finds by placing a check in the box to the left of the object.
Download & instal Spybot S&D from http://www.safer-networking.org/index.php?page=download Update it B4 scanning.
After the scan is complete, have spybot fix everything marked RED.
On the page that first opens when you start Spybot there is an option to immunise, you should do this. In the immunise section there is also a link to download Spywareblaster. Download that & you can keep it updated by selecting the same link that you use to download it.
Not sure what will be left so will list what needs to go as of this list.
Have only HJT running & fix these entries=
R1 - HKCU\Software\Microsoft\Internet Explorer,SearchURL = http://aifind.inf/?id=54
R1 - HKCU\Software\Microsoft\Internet Explorer\Search,SearchAssistant = http://hdfxqd.t.muxa.cc/s.php?aid=35 (obfuscated)
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Start Page = http://hdfxqd.t.muxa.cc/h.php?aid=35 (obfuscated)
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Search Bar = http://hdfxqd.t.muxa.cc/s.php?aid=35 (obfuscated)
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Search Page = http://hdfxqd.t.muxa.cc/s.php?aid=35 (obfuscated)
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Search_URL = http://search.hpwis.com/
R0 - HKLM\Software\Microsoft\Internet Explorer\Search,CustomizeSearch = http://search.ieplugin.com/search.htm
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,HomeOldSP = http://hdfxqd.t.muxa.cc/h.php?aid=35 (obfuscated)
R3 - URLSearchHook: PerfectNavBHO Class - {0428FFC7-1931-45b7-95CB-3CBB919777E1} - C:\PROGRA~1\PERFEC~1\BHO\PERFEC~1.DLL (file missing)
O1 - Hosts: 66.250.171.167 auto.search.msn.com
O1 - Hosts: 66.250.171.167 sitefinder.verisign.com
O1 - Hosts: 66.250.171.167 sitefinder-idn.verisign.com
O1 - Hosts: 66.250.57.9 view.atdmt.com
O1 - Hosts: 66.250.57.9 click.atdmt.com
O1 - Hosts: 66.250.57.9 leader.linkexchange.com
O2 - BHO: (no name) - {0428FFC7-1931-45b7-95CB-3CBB919777E1} - C:\PROGRA~1\PERFEC~1\BHO\PERFEC~1.DLL (file missing)
O2 - BHO: (no name) - {69135BDE-5FDC-4B61-98AA-82AD2091BCCC} - C:\WINDOWS\SYSTB.DLL
O4 - HKLM\..\Run: [Winhost] C:\WINDOWS\winh.exe
O4 - HKLM\..\Run: [sys] regedit -s sys.reg
O4 - HKCU\..\Run: [olehelp] C:\WINDOWS\olehelp.exe
O16 - DPF: {2CAB81F6-1CBB-49FD-809E-B2D37D0CFFED} - http://www.popmonster.com/control/src/iefeatures.ocx
O19 - User stylesheet: c:\windows\my.css
As I mentioned, not all of these will be there after running the above spyware removal tools. Reboot after doing all this & please post a new log so we can be sure they are gone for good.