This might help.
http://www.projectorcentral.com/hd-dvd.htm
http://www.projectorcentral.com/retailing_HD-DVD_Blu-ray.htm
http://www.projectorcentral.com/hd-dvd.htm
http://www.projectorcentral.com/retailing_HD-DVD_Blu-ray.htm
Using a projector for Blu-Ray or HD DVD