Tversity FTW
I have been trying to stream from my Vista machine on and off for around a year now. I've tried everything and nothing seem to work. Then I read this post, installed Tversity, added a folder that I wanted to share in Tversity, went over to my xbox.. clicked the boxes under UPNP settings in Network in xmbc..and clicked UnPn Server in Video..and there is the folder I added to share in Tverysity w00t
Thanks competes2win for telling us about this great free program.