Download CWShredder 2.15 from here. Run it and press the *fix,* not scan and allow it to clean the infection. Close all browser and explorer windows before hitting the fix button.
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Please download the trial version of Ewido Security Suite here:
http://www.ewido.net/en/download/
Install it, and update the definitions to the newest files. Do NOT run a scan yet.
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Download AboutBuster 5:
http://www.besttechie.net/tools/AboutBuster5.zip
http://www.malwarebytes.biz/AboutBuster5.zip
Once downloaded, unzip it, and put the folder on your desktop. Then double-click on the AboutBuster icon to start the program.
Click Update. This will start updating AboutBuster with the latest definition database.
Once it's done updating and you see that dialog, click Ok.
Close AboutBuster.
Reboot into safe mode following the instructions here.
Start AboutBuster and click Begin Removal.
When the scan is done, click Ok.
Run Ewido, and do a full scan. During the scan it will prompt you to clean files, click OK.
Save the logfile from the scan. Restart your computer in normal mode and please post a new HijackThis log, as well as the log from the Ewido scan.