Virus Removal Tool

At first, try doing the following:
reboot your computer and at its startup press f8. this will let you choose to enter the safe mode. enter the safe mode and run the scan in the safe mode. if the virus was cought and deleted. thats a good thing . if not istall a new antivirus.
try kaspersky at http://www.kaspersky.com
bitdefender at www. bitdefender.com
trend micro at http://www.trendmicro.com
these are some of the antiviruses in the market. download one of the them from the sites and use them for 30 days(trial).this must do the job.

Try Malwarebytes’ Anti-Malware to remove this. Look down below and you can see that MBAM has the definition to remove. It’s free to use. Click on Download.com icon to get Malwarebytes. Please update first.

download > update > close applications and windows > run in quick scan > you may be prompted to reboot

http://www.malwarebytes.org/malwarenet.php?name=Trojan.Downloader

Run SUPERAntiSpyware as well. Again it’s free to use. Best to run this in safe mode

http://www.pchell.com/support/safemode.shtml

http://www.superantispyware.com/freevspro

Your PC is already infected. Download and install the anti-virus program on your PC may also cause the anti-virus program to be infected.

Use another clean PC to download Clamwin portable anti-virus and install it on a USB pen drive.
Download here
http://portableapps.com/apps/utilities/clamwin_portable

Document on how to configure ClamWin
http://support.real-time.com/open-source/clamwin/index.html

1) Start Clamwin anti-virus and update the latest anti-virus definition files.
2)Select the tools menu bar, set the preferences to remove virus.
3)Start the infected PC in safe mode by pressing F8 during start up.
4) Run the Clamwin Anti-virus that is installed on the USB pen drive to scan the
infected PC.
5)After removing the virus, install crap cleaner (ccleaner) to get rid of the
viruses left over setting in the windows registry.
http://www.softpedia.com/progDownload/CCleaner-Download-8851.html