Things may get a bit dicey during the configuration of these programs, so don't forget Google is your friend.
When you stream content to a console, you'll need to use a network-connected computer to serve the media.
Link to Gamespot article here...
For best results, we really recommend a wired connection as you'll need as much bandwidth as you can get your hands on. In terms of software, there are a few applications you can choose from--some free, some not so free. We've had a lot of success using TVersity with both consoles, but we'd recommend XBMC if you're more of an advanced user for its customization capabilities. There's even ways to get YouTube and other online content directly on your console.
Whichever setup you choose, serving video to your console just might get you a step closer to throwing away that satellite or cable box. For now, check out our slide show for an idea of how these media-serving programs operate and how your console will look once you've set everything up correctly.