If you're interested in sniffing around a bit more and participating in a spacewalk simulation similar to what the Atlantis crew will be doing visit the NASA Spacesuits and Spacewalk site. Be war - the simulation only works on PC's at the moment and is in beta testing at the moment.
The NASA video page also has great footage if you're interested in learning more.
There's so much on the internet regarding Hubble. Space.com is another great resource to investigate Hubble. The great thing is that every time you read something new it generates more questions.
How does that monstrous ship get into space? Let's review the Newton's Laws of Motion.