I used nvm to download node v0.4.10 and installed npm to work with that version of node.

I am trying to install express using

npm install express -g

and I get an error that express requires node version >= 0.5.0.

Well, this is odd, since I am following the directions for a node+express+mongodb tutorial here that used node v0.4.10, so I am assuming express is/was available to node v0.4.10. If my assumption is correct, how do I tell npm to fetch a version that would work with my setup?