- Get node binary (node.exe) from http://nodejs.org/download/
- Create the folder where node will reside and move node.exe to it
- Download the last zip version of npm from http://nodejs.org/dist/npm
- Unpack the zip inside the node folder
- Download the last tgz version of npm from http://nodejs.org/dist/npm
- Open the tgz file and unpack only the file bin/npm (without extension) directly on the node folder.
- Add the the node folder and the packages/bin folder to PATH
- On a command prompt execute
npm install -g npm
to update npm to the latest version
Now you can use npm and node from windows cmd or from bash shell like Git Bash of msysgit.
Would you mind posting your antivirus results here?
I'm asking, because I use this daily and if this was a virus, it would not even be allowed on github