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How do I install the sys file?

Use an Unzip-application to select the sys file and extract it to your system directory. By default, this is C:\WINNT\System32\drivers (Windows NT/2000), or C:\Windows\System32\drivers (Windows XP, Windows Vista, Windows 7). You may also put it in the directory of the program, that is asking for the file. Make sure overwrite any existing files (but make a backup copy of the original file). Reboot your computer.