I recently got a Asus CD Burner 52x24x52 for 60.00 US dollars. I also had a DVD drive to go into the computer also. I could get the computer to recognize the Burner but not the DVD. The problem ended up being that I forgot to set the DVD as a Slave drive. So if you have two drives double check the jumper settings.

Next best thing is to do what allenb suggested. Find a driver or raise hell.