gem install vagrantLuckily, us Windows developers recently got chocolatey. I just put together a few packages that makes vagrant setup on Windows a snap. To try it out just follow the chocolatey installation instructions. Then open a command prompt and run:
cinst vagrantThis command will download and install JRuby, VirtualBox, PuTTY, and the vagrant gem. It will also automatically set the registry keys for putty so that once you set up a box with vagrant you can SSH into it with:
putty -load vagrantAt this point the package comes with the old "works on my machine" stamp.
Check out the code on github or report an issue.
Update 11/10/2011:
More recent versions of the package will not modify the putty registry with the vagrant profile. Instead I recommend installing vagrant-putty.