The Trojan-Downloader is a kind of Trojan, which once running will generate infection files, modify Registry and add Startup items, in order to make itself run at the computer startup. Trojan-Downloader is so stubborn that lots of antivirus software can do nothing to it.
Read method to fix the Trojan Download problem, please click here:
http://ezinearticles.com/?How-to-Remove-the-Trojan-Downloader&id=2945313
amy Z., December 2009