In Dreambox VLC Streamer, open Transcoding part:
Output method: http
Encapsulation: asf
Video codec : theo
Video bitrade: 384
Scale: 0.5

Audio Codec: mp4a
Audio Bitrade: 64
Audio Channels: 2

And that's it..you can play this stream with built in Media player.

If you want to make video bookmarks in media player:
1.On computer make TXT file and write:
http://XX.XX.XX.XX:YYYY
2. This is your path to the streaming computer( if you are behind router-hub, you must config it)
3. Change extension of TXT to m3u.
4.Copy this file to n900 and open with File manager.
5.The stream must start if you make proper configuration. In media player press "+" button and write the name ot video bookmarks.

I hope this help..with this configuration, you can watch every video playing in home computer. Change settings in VLC streamer and find what is best for you.