ok, download DC++ and connect to a.i2hub.com:8080
Your nick has to be [College]name
For example, I got to Rochester Institute of Technology so my nick on the hub is [RIT]Jurgen
Then you just connect, make sure you are sharing at least 1gb of stuff, and you can download from other people who are on internet2. BUT, you have to be on your schools network thats connected to an internet2 backbone inorder to connect to the hub, ie you have to be on campus.
http://schools.i2hub.com/ has what you would put for college on your nick. It also has a list of all colleges that can connect to the internet2 hub.