I've asked a couple of times where you have GMPC installed and you've not replied. Don't bother to answer now anyway, let's finish this frustration for you: Just send the map to your C drive's root, locate it, rename it from gmapsupp.img if you want and then move it to wherever the GarminMobilePC is physically installed. See this thread for other working detail map names: [Only registered and activated users can see links. Click Here To Register...] or Post #43 or 46 in the current thread.