Scan with HJT and have it fix the following entries:
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Bar = http://0ml.net/searchasst.html
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Page = http://0ml.net/cat
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://0ml.net/cat
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Default_Search_URL = http://0ml.net/cat
R1 - HKCU\Software\Microsoft\Internet Explorer\Search,SearchAssistant = http://0ml.net/searchasst.html
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Start Page = http://0ml.net/cat
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Search Bar = http://0ml.net/searchasst.html
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Search Page = http://0ml.net/cat
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = http://0ml.net/cat
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Search_URL = http://0ml.net/cat
R0 - HKLM\Software\Microsoft\Internet Explorer\Search,SearchAssistant = http://0ml.net/searchasst.html
R1 - HKCU\Software\Microsoft\Internet Explorer\SearchURL,(Default) = http://0ml.net/cat
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,HomeOldSP = about:blank
R1 - HKLM\Software\Microsoft\Internet Explorer\Search,(Default) = http://0ml.net/searchasst.html
O2 - BHO: (no name) - {CC036691-17AC-4CEB-A63A-33BB8432ECBB} - C:\WINDOWS\system32\imolaa.dll
O2 - BHO: (no name) - {CE7C3CF0-4B15-11D1-ABED-709549C10020} - C:\WINDOWS\system32\2g8oxrryue.dll
O3 - Toolbar: The Simple Toolbar Search - {A6790AA5-C6C7-4BCF-A46D-0FDAC4EA99EB} - C:\WINDOWS\system32\fipprudp0h.dll
O4 - Global Startup: RealAudio.exe
O9 - Extra button: The Simple Toolbar (HKLM)
O9 - Extra 'Tools' menuitem: The Simple Toolbar (HKLM)
Close all windows other than HJT before hitting the Fix button
Reboot into Safe Mode
Go to:
C:\WINDOWS\system32 and delete imolaa.dll
C:\WINDOWS\system32 and delete 2g8oxrryue.dll
C:\WINDOWS\system32 and delete fipprudp0h.dll
Reboot normally
Download the Hoster from here:
http://members.aol.com/toadbee/hoster.zip
Run Hoster and press Restore Original Hosts, OK, and Exit Program. Reboot.
Update your hijackthis to version 1.99. Close all browser windows, scan with the updated HJT, and post a new log please.