You could try getting a font conversion utility to create TrueType from PS Type 1, or you could download Adobe Type Manager Lite for free. I don't understand why Windows users think they can only use TrueType, or is this just a problem with your application program?

Well then, I think the font conversion utility would be worth looking into. I think there are some free tools for the job, or FontLab's TransType would certainly handle it.