My avast anti-virus has detected 2 viruses the 1st one is called Win32: Trojan-gen, {vb} and the 2nd one is called Win32: Trojan - gen, {vc}. When i found out that i had these on my computer i done a thorough scan, but at the end of the scan it didn't detect no virus. Could some one please tell what they are and how to get rid of them?