My PC is infected with NTOSKRNL-HOOK. When I scan with McAfee it detects the trojan and says that it has been removed, but it has not been removed. I did a search on these forums and found a thread that suggested using anti-malware, which I did. It detected 12 infected files (I have the log), which I deleted as suggested. I re-booted, ran McAfee again, and the trojan is still there. I am also now getting repeated error messages when I open anything that the application is not a valid Windows image, which I assume relates to the files that I deleted. Any suggestions? Do I need to immediately change passwords for sensitive appliations such as banking software?