You need to make sure you have a Home Media DVR (19.99 a month), not just a normal DVR (15.99 a month). You can only stream music and pictures from your PC, not video. Video is in beta testing phase right now, and we all hope will be out soon. But it does not support divx, or xvid, and will only stream from youtube.com below is some info about the software and setup.
Click here to download the Home Media DVR set-up guide.
I am not complaining at all about Verizon trying to add media mang to their system. But I do have one question if someone could answer it. The video streaming that they are working on is only going to be good for youtube videos? So you have to upload all of your vidoes to youtube first? Sounds crazy when there are video media managers in place as we speak with the XBOX 360. I understand that certain video types will not be able to played but it sounds crazy to me. But I guess any step is a step that is in the right direction.