Unable to open eps files in Vista with GIMP 2.4.5

When I attempt to open .eps files, I get an error message. I have attached a picture of the message so you can see what I am talking about. I do not know exactly what this means, but I hope someone can help out. If not, well then that's too bad for me. I await an answer.

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ghostscript is installed?

ghostscript is installed?

Same problem, and ghostscript 8.64 is installed

I'm having this same problem on my Vista 64 machine, and I have the latest version of Ghostscript installed.

And you can open postscript

And you can open postscript files from any directory on your system, using the command line?