MiniVMac: "...is not a valid win32 application."?!?!?!?

I've searched numerous times on the forum and on google for any clue as to why this is popping up, but to no avail. I have all the components I need to run this, ROM, disk space, system installers, etc. But when I try to drag the ROM file onto the minivmac application, it tells me "Minivmac.exe is not a valid win32 application." I definitley downloaded the WinXP version from the minivmac website, and yet this is all that it gives me. Am I overlooking something here? thanks.

-tim