Download HijackThis:
http://free.antivirus.com/hijackthis/
Download and install HijackThis. You will need to download both the Installer and Executable files.
1. Download Installer (See links above)
2. Download Executable (See links above)
Once installed, open HijackThis by clicking Start > Program Files > HijackThis and click the button labeled "Do a system scan only".
Once the scan is complete, click the AnalyzeThis button. A web page will open containing helpful information regarding HijackThis.
Once the scan is complete, the scan button will read "Save log". You may save the log file to your PC. Once you select where you would like to save the file, it will open in your system's default text editor. Typically this application is Notepad. Copy the results and paste them in this thread or in the "Offficial Malware/Virus" thread. Wait for someone to tell you what entries to delete and what to keep.