Just to let you know that '1000.exe' is not a virus or trojan in any way, I have tested it on a virtual machine and I have not found any suspicious behaviour, I have also use VirusTotal and to me, there are 2 false positives so I think CalvinWilliams your computer may be infected with something else than this.

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All you need to do for DOS games is to download a free version of DOSBox or use a Virtual Computer emulation like the free VirtualBox loaded with an older version of Windows.

- January 20, 2016It is possible to play 16 bit games on 32 & 64 bit systems