Is the computer that you have, "Compaque" or "Compaq"? Did the drive come installed with it or is it something that you purchased separately? If you are running Windows98, it should automatically identify any generic drive, EVEN if it is NOT labelled on the case, Windows98 will usually identify it. If it hasn't, you definitely have some "generic" drive and will need to identify it using a product number or something similar. Good luck.