Apparently GIMP uses Ghostscript in order to import eps images. I have both Gimp Portable and Ghostscript Portable installed, and when I try to import an eps file in Gimp, I get a message saying Gimp couldn't find Ghostscript and to try using the environment variable GS_PROG to indicate where it is.
I haven't used environment variables since DOS times, can someone tell me how to set one when Gimp Portable runs? Also, in PortableApp\CommonFiles\Ghostscript\bin\ I have several executable file: gswin64.exe, gswin64c.exe, gsdll64.dll, gswin32.exe, gswin32c.exe and gsdll32.dll. I'm running Windows 7 64-bit, so maybe I need one of the three 64-bit files, but maybe I need a 32-bit version if Gimp is 32-bit.