You didn't tell what type of IDE cable you used or what happens if you tried just ONE drive.
Bob
I have a Dell Optiplex260 with a regular cd-drive and a cd-rw drive. Last week they both stopped detecting any kind of cd media. For testing, I put in my XP install disk and forced a cd boot (F12) but it was not detected in both drives. The strange thing is "My Computer" shows both drives and respond to the "eject" command. For further testing, I tried a new IDE cable and verified the jumpers on the drives (both on cable select) I also took a known good cd-drive from a friends pc and installed it (tried BOTH IDE contollers on mb) but got the same results: Windows detects the cd-drive but no cd's. And trust me, I tried about 20 different CD's all of which works on my friends pc.
Please, somebody help me!!

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic