I just loaded the software for the Haupauge card in my work computer. I might take it home and play with it tonight to see what I can do. I've never actually used the card to capture video.
My wife's comptuer also has a capture card. It's an older ATI all-in-wonder, and their software had a nasty habit of breaking for no apparent reason. I am not sure if it is even working right now.
Hopefully I can set up a stream and if so I'll let anyone know who wants to check it out. I have no idea how good the quality will be though.
I have an ATI card with reciever on my desktop (4yrs old). I tried back then to stream it but couldn't get the sound to work. Played a little with it today and was streaming Fridays Chicago game on gamecenter.
Another option is ORB but with that as far as I know if you give someone access to the stream they also have some access to some of your files on the hard drive. You can limit it but not sure I would be comfortable doing that.