Dual CD-Roms

You didn't mention what operating system you were in but in the control panel\system\device manager you can set a starting drive and ending drive letters for your cdrom to be assigned to. Try that. Otherwise, add a line to your config.sys setting lastdrive=e.
Good luck

From device manager, delete both drives, and the IDE controller that they are connected to.

Reboot, and allow Windows to re-install the drivers for the IDE controller and the CD drive.

You may need/want to download and install the latest drivers for the chipset on your motherboard.

If a name brand PC, check the mfgs web site.
If not, check www.motherboards.org or www.wimsbios.com to find who's motherboard you have, and links to motherboard mfgs.

You may have a line in Autoexec.bat,or config.sys (use either msconfig or sysedit to check these files) that is assigning a high letter for the drive in DOS mode, and Windows is finding the drive in Windows.
Unless you need DOS mode access to the CD drive, you DO NOT need to install the driver that came with the CD drive.

Chas

Are you using Windows 95/98
1) Boot into SAFE MODE
* Keep tapping F8 just after Bios Check to get boot menu
* select SAFE MODE and press enter
* After windows has loaded click OK on dialog box
* Hold (Windows Key((FLAG)) and press [pause/break] to load System propitys
* Select Device manager
* open up CDROMS
* Remove all CDROM items
* SHUTDOWN - Restart
windows will start in normal mode and should refind your CDROM, if you need to change the letter for the drive then:
* [WIN]+[PAUSE/BREAK]
* Device Manager
* +CDROM ----> Brand ----> Properties
* Settings
* At the bottoms change START DRIVE LETTER/END DRIVE LETTER to the required drive letter..
* Shutdown - RESTART
DONE ...