I have a Dell Dimension 2400 running Windows XP. Under My Computer there are no CD rom drives listed and I have two ( HL-DT-ST CD-RW GCE-8483B & Lite-On LTN486S 48 x max) - I got this info from the Device Manager. This info shows with a yellow exclamation point in the device list - I tried uninstalling them - then rebooted. The drives are detected and windows indicates new hardware installed - but they are still not listed. I chatted with Dell support and they could not provide me withe the HL-DT-ST CD-RW GCE-8483B driver. Any help you could provide to fix this issue would be appreciated. Thank you.