(copy/pasting something that came to mind but is irrelevant for the reddit)
A note on the registry, in case the windows installer maintainer is reading this: the installer should use it. If it puts dmd in the app path key, it *should* be able to run without modifying the path. c:\whatever> start dmd [args] ought to work. dmd finds the linker relative to its own directory so it doesn't need to be in the path. I recently read about this app path thing on Raymond Chen's blog and I think it might be useful here. I've heard people having trouble setting the path on windows before so just throwing it out here.