compiling Inferno on Windows

Perhaps this has been asked before, but I couldn't find it for sure:

1. For the official builds from Vita Nuova, what compilers are used?  Best I can tell, VS6.

2. Has anyone successfully compiled hosted Inferno under VS 2005 or 2008?

3. I'm trying to build the 20080416 version from Google Code under VS 2005 + Win2003R2 SDK on WinXP.
I'm having pretty good luck, but am stuck while building emu.  I had to rebuild rcsh, but after that, here's
the last few lines of output:

rcsh ../port/mkroot emu
mk: don't know how to make 'dev'
mk: echo '@{builtin cd' ...  : exit status=exit(1)
mk: for (j in ...  : exit status=exit(1)

Anyone know why it wouldn't "know how to make dev"?  The build process works just fine on my MacOSX system...

Thanks all in advance!

-Ben