The latest version of Zero can always be downloaded from here. Zero is distributed with an installer as well as a standalone zip file that can be easily run from even a USB drive.
Recommended System Requirements
- 1 GHz or better processor. Multi-core is even better!
- Graphic card with up to date drivers that supports DirectX 9.0c runtime.
- 512MB RAM.
- Windows XP SP 2 or better.
Zero is now available in two flavours: A regular windows version (Zero 0.7.1 Vanilla) and the retro themed one (Zero 0.6.6). Features wise they are both the same, so take your pick!
IMPORTANT: In order for the emulator to work correctly, you may need to download additional DirectX files from http://www.microsoft.com/en-us/download/details.aspx?id=8109