I've been using this grep invocation for years to trim comments out of config files. Comments are great but can get in your way if you just want to see the currently running configuration.
School has been out for the summer in many parts of the country for some time now, but why not use OpenOffice.org Impress for a little informal summer-school fun?
Once you are authenticated, you can start translating! Transifex makes it easy for you to get the most up-to-date po file, translate, and post it back to the project.
The simplest way to describe a virtual machine is an isolated, copy of a machine running within a real machine. In terms of PCs and PC operating systems that would be an operating system running within an operating system.
Vim is one the more popular choices of text editors for Linux. For vim, there are a few non-default options that may be useful whether editing config files or writing scripts in your favorite language.