Hello all. My brother was kind enough to install a Free RAR frog application on my computer. Now I have this Backdoor.Tidserv trojan on my machine. It says it must be manually removed but the steps that Symantec is offering are not working. It will not delete, the uninstall file that came with the Frog app does not work and it will not uninstall from the control panel. Does anyone have any experience with this or an idea of how to rid my machine of it? I am currently running Vista. Thanks.