XBOX360 Media Center Advice.

I've managed to connect my Video media files to my XBox using Windows Media Player (I did start using TVeristy, but want the more functions from WMP).

What I want to know is, can I add Video Artwork to my Video files? I've tried putting all the videos into there own seperate folder with a folder.jpg and also tried renaming the files to nameofvideo.jpg which doesnt work.

I've got loads of my DVD's ripped to XviD to my 500GB drive and would be nice to have the artwork while browsing.

Anyone managed it? If so, how?

--EDIT--
I've also tried the jpg extension changed to nameofvideo.tbn but thing this is more for the Original XBox.