Commandos: Behind Enemy Lines

Windows MINIMUM: 

• IBM PC or 100% compatible
• Windows 9X/ME
• Pentium II 300 MHz (or equivalent)
• 64 MB RAM
• 100% DirectX® 8 compatible 3D Accelerator card with at least 12 MB VRAM
• 100% DirectX® 8 compatible (or higher) Sound card
• DirectX® 8 (DirectX 8.0a included)
• 2 GB uncompressed hard drive space
• 100% Windows 95/98 compatible Keyboard and Mouse

Windows RECOMMENDED: 

• Pentium II 450 MHz
• Windows 98SE/ME, 128 MB RAM
• 100% DirectX® 8 compatible 3D Accelerator card with 32 MB VRAM
• 3 GB uncompressed hard drive space

To activate the Steam key you've received, follow the instructions below;

1. First up, open the Steam client. (If you don't have it, simply click the "Install Steam" button here => Steam Store )
2. Sign in to your Steam account. (If you don't have one, click here to create a new one => Steam Account)
3. Click on the "ADD A GAME" button in the bottom corner of the client.
4. Then, select "Activate a product on Steam..."
5. Write down or copy-paste the activation key that you've received from %s in the window.
6. Your game is now visible in your library! Click on your "Library".
7. And finally, click on the game and select "Install" to start your download.