How to install network-manager without internet access?

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http://askubuntu.com – I have been trying to install some kind of network indicator to show my current bandwidth usage on the panel on top of the screen so I decided to install https://launchpad.net/ubuntu/+source/indicator-network But just after I have put sudo apt-get install indicator-network I have uninstalled a bunch of vital ubuntu applications e.g. network manager - which was my fault because Ubuntu warned me about it but hey! - why would it mark these applications to remove while installing just an indicator ? Now I am unable to connect to the internet with that machine on Ubuntu. How can I install netwo (HowTos)