Gotta try this trick

Opening ai files without Adobe Illustrator

But what about eps files?

How I make halftones:
I take my graphic and run it through Rasterbator to make a halftone PDF. Then I take that PDF and open it in GIMP and save it as a png. Now I've got a halftone that I can put in my b&w zine. Because the world isn't black and white. But the halftones for my zine need to be.