Cyberdrive 52x

Is this a new drive? Make sure the jumpers are set properly for how you want it installed as either the master on the secondary ribbon or slave to your hard drive on the primary. Next did you get a cdrom driver diskete with it? If not you need todownload one from http://pcdrivers.com/cate.htm and
www.drivershq.com/dd.asp.
You could also try the updated oakcdrom from winodws 98. Does it have power and operate normally open/close? How many other ide devices do you have? A little mor einfo may help solve this one.
Good luck