I found these suggestions for how to add the code to allow Dailymotion videos to be embedded:
If those don't work, I tried Googling "vBulletin code to embed dailymotion videos" (without the quotation marks) and several suggestions came up.
It would be great if it could be added, if it's easy to do. So much WWF/WWE stuff is only on Dailymotion now.
I know that this is an old thread, but I didn't see a point in starting a topic asking the exact same thing, especially since the issue is still relevant now.