NYCboy, What's the name of the anti-virus program that you're using on your computer? For example, Norton Anti-Virus. Does the anti-virus program come on a CD-ROM or did you download the program? If the anti-virus program came on a CD-ROM, put the disk in the drive, restart Windows, and watch the screen for any messages. If you see a message asking you to press a key to run the anti-virus program from the CD-ROM, press that key right away. Run the program and let it do a full scan for viruses. This may take a few hours. After the full scan, the program should display messages saying that it found viruses and what did the program do with them. If the program says that the virus infected program files, you have no choice but to do clean installation of Windows, device drivers, and programs. You can copy the files under the "Auran\Trainz\local" or "Auran\TC\local" folder to another hard disk. After reinstalling Windows, device drivers, and programs, run CMP and let it import files from the other hard disk. It is possible that the virus infected the files on the other hard disk. If you don't know how to do these instructions, find someone to help you do these instructions.