I take Computer Engineering class in high school, and we are performing our final project on networking.

The objective is to take an encrypted word file out of our classmate's "My Documents" folder through a network using "any means neccessary". We have permission to use password hackers, worms, firewall blockers, ect. (as long as we dont break any hardware).

Any advice on the best way to to make this intrusion and extraction? (and recommended software?)

p.s.
These computers are pretty nice but there wont be any internet access, we have to install our firewalls, anti-virus, and spyware blockers of choice via memory sticks.