You're welcome
Anyway you can see which codec is used by BS.Player by following these steps:
With a movie opened (in your case a DVD) right-click on BSplayer window, then choose Options -> Filters -> Advanced
There you'll find all the information related to the filters used by BSplayer this way you'll be able to figure out which codec have you installed on your PC that enables you to play DVDs and pass it to your frind