DOS Games made for DOS require an emulator to run on Windows. Use DOSBox or a frontend like D-Fend Reloaded and read this guide to play DOS games on your Windows PC.
EF2000 spawned later versions with various improvements, including EF2000 V2.0 for Windows 95 and Super EF2000 with the Tactcom additions for Windows 95.
The above text is licensed under the GNU Free Documentation License. This text is based on this Wikipedia article.
Search on eBay