How to fix sources list to get the MongoDB packages

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http://askubuntu.com – I was reading a tutorial for mongoDB and it ended up to where I should have added a deb package in Ubuntu 11.10 sources list, I was able to find /etc/apt/sources.list.d/. I need to fetch the package from the following directory: http://downloads-distro.mongodb.org/repo/ubuntu-upstart/dists/dist/10gen... However I do not know actually what is the exact way of pointing to the package mongodb-10gen_2.2.0_amd64.deb in there. I added the following but whenever I issue sudo apt-get update , it fails to fetch the package: deb http://downloads-distro.mongodb.org/repo/ubuntu-upstar (HowTos)