When trying to use the Mac and Parallels, I obtained a Windows driver, and could print an image from Windows. And, as you'd expect, the utility also worked. But the Adjustment Program could not see the printer at all. I haven't given up on using the Dell, but have not been able to work with it for a few days. Someone with more Windows experience than I has been helping me, but I'm at the mercy of his schedule. I made sure to get the latest driver for Windows, direct from Epson. At last check, we hadn't yet gotten the Dell and printer to play together even as well as the Mac did with Parallels, but I expect that we will.
I'm wondering whether the problem may lie with using Windows 7. I'll be checking on whether we'll have to use an earlier version of Windows, or "compatibility mode," whatever that is. When trying to get help from 2Manuals, I said that I was using W-7, and heard no claim that it wouldn't work. I will report on how this problem gets solved....or not.