I have two questions today.

First, when I find a software package to install on a linux machine, will that same package work for every linux distribution? Is it OS specific? Is it shell specific?

Second, I know there must be a virtualization solution that can be run in linux, I found a sample here: http://www.youtube.com/watch?v=1vfWw...elated&search=
What is the virtualization emulator known as and where can I find something like it?

Thank you