There have been several issues on these threads concerning compatibility issues with Vista. Most, if not all of them have been solved by updating the latest drivers and BIOS updates for the computer.

As far as streaming video, there are only certain supported files due to Copyright protections and supported approved codecs. Perhaps some members of the forum community can help.

The list of codecs and resultions supported via WiseLink are found in the manual, and I've posted a list here for your convenience.
http://i397.photobucket.com/albums/pp60/samsung_hd_tech/Page82.jpg

--HDTech