smokey- Yep, I'm a bit slow. Read right past where you said it does see the Media center on the computer.
Did you set the sharing attributes of the other computer folders you wish to see,plus have a wmv file in that folder? XBOX should see the WMV video files immediately. I had to put XBOX online in the store for an update to see the MP4 files. I have the additional folders set to guest sharing. IMO, vista is more difficult to set up but now I can see several vista and xp computers on my XBOX360. If sharing is set on the computer those folders are listed with the different computer names in the XBOX menu under "videos"; likewise under music, etc.
Did you set the sharing attributes of the other computer folders you wish to see,plus have a wmv file in that folder? XBOX should see the WMV video files immediately. I had to put XBOX online in the store for an update to see the MP4 files. I have the additional folders set to guest sharing. IMO, vista is more difficult to set up but now I can see several vista and xp computers on my XBOX360. If sharing is set on the computer those folders are listed with the different computer names in the XBOX menu under "videos"; likewise under music, etc.