Many people waste thier money on high profile Anti-Virus softwares.I am not saying they are not worth it..They are really good but not everyone can afford them. So use the following 100% freeware tools: ComboFix: 1.Removes most trojans and viruses.Realy powerfull 2.Command prompt tool Download Link:http://www.bleepingcomputer.com/combofix/how-to-use-combofix Note:Use the above link only many sites provide fake verson of this GMER: 1.Powerfull against roolkits. 2.Removes even ADS hidden roolkits with ease Download Site:http://www.gmer.net Apart from this use free anti-virus like AVG free edition Enjoy a problem free and hacker-proof System