Ah, a meta blogging post. Sorry, I try to keep these to a minimum...
The Gnu Emacs for Windows distribution appears to be pretty good at inferring where a reasonable place for $HOME is, straight out of the box. In my case, said reasonable place was %USERPROFILE%/AppData/Roaming which was an entirely acceptable default.
Throwing caution into the wind this morning, I'm having an updatefest only a few hours after the software was released:
As VS2012's C++ compiler doesn't support "true" variadic templates, the new runtime library classes that use variadic templates are implemented using macro magic behind the scenes. In order to get the "variadic" templates to accept more than the default of five parameters, you'll have to set _VARIADIC_MAX to the desired maximum number of parameters (between five and ten).
The "latest" ACCU magazine showed up a couple of days ago after a minor delay: