The standard software scanning both desktop and online scanning for my colleague's laptop computer aren't removing the Trojan horse that's been identified by the online scans from trendmicro and Microsoft malicious software removal tool. (Of course McAfee on the person's laptop didn't find anything wrong and didn't remove anything.) We're a low-budget operation -- what steps should we take in a deadline-based enviornment that doesn't permit a Windows reinstall to remove the bogus antivirus/Trojan horse downloader program.? What folders and files do we search? I'm a budget analyst determining software needs for our security, not an IT security professional but I'll refer your answer to our top tech person.