node express install without internet

I have installed node.js & npm on a Redhat server in a closed environment. Now realized that I can't use npm to install anything. I want express, jade and stylus. I have tried looking for packages to download install with npm but no luck. Can I do this without an internet connection on the server?

Thanks,

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On another server with internet access and npm run "npm install jade" etc.

Then copy the "node_modules" directory across to the closed server