Hi,
   first off, you should be using these overlays with DVE Emulator
version 2.0 beta 7 or better (beta 9 is the latest as of 9/99). Next,
in order for these overlays to display at their best, please set 
LINE_TYPE :0 in "vectrex.ini"
   If you have a fast computer and want to keep 'LINE_TYPE :1'
in vectrex.ini so you can have anti-aliased lines then the ovelays will
still work but you won't get the multi-colored lines effect.

Here's how to get started:

1. Unzip the .PCX files into into your DVE "pic" folder
2. Unzip "moon.vol" into your DVE "vol" folder
3. Make sure you have "moon.bin" in your DVE "bin" folder...if you
   don't then be sure to download the public domain file from:
   http://vectrex.davesvgc.com/moon.zip
4. Turn off anti-aliasing in "vectrex.ini"
5. Open "vectrex.ini" and add an entry for "moon.bin" to the last
   section, the carousel section...
6. Start DVE 2.0 beta 7+ and enjoy the game!