My windows 7 pc is infected with a virus called Trojan.Dropper/Gen-NV. I have a trial copy kaspersky antivirus installed on my pc. Every time it gives me a popup that my pc is infected with the Trojan.Dropper/Gen-NV virus but I am not able to delete it. It tells me to purchase the full version of of kaspersky ??? Can any one tell me how to remove Trojan.Dropper/Gen-NV virussafely ?