Google DOCS is a Software as a Service oriented document manager. It can work completely on the cloud without loosing your data.
At the School they gave us a MSM Webmail that does not come with this suite of tools for working together as a team. In general I use google docs at my work and it has been a really useful tool, specially to collaborate among people.
The idea of this post is teach you how to use your MSM Webmail ( or any other mail ) with google docs, even if your email is not from Google.