Many colleges have a web site where they host many of their games also the NCAA site provides many links to game streams and many conferences do this as well.
As to a particular college just do a bit of searching and you can find the most of the authorized content.
ESPN3, if it is available from your ISP, is another good source for games and they have many live feeds.
Justin.tv is another source for live games.
3100X, 4299x and N1000-using HDMI and comp.
Some people are like Slinkies... not really good for anything, but they still bring a smile to your face when you push them down a flight of stairs.