Update 1
Improvements were made, now npm install zmq
works, but you still need Win SDK 7 and VS C++ 2010, I think.
Original Answer
Unfortunately npm install zmq
still don't work, but you can install it from local repo.
mscdex forked the zeromq.node repo, and added windows support, so just clone his zeromq.node
But before build you need some prerequisites:
Run the Windows SDK 7.1 Command Prompt from Start menu / Microsoft Windows SDK v7.1
go to the cloned directory, and type
node-gyp configure
node-gyp build
this should work on windows 7 64bit. I cloned zeromq.node into my node project dir, so in my app.js
i could require('./zeromq.node')
.