DVD/CD drives not showing up in windows explorer

According to Adrynalyne,

http://forums.majorgeeks.com/showthread.php?t=145532

First method

1. Go to start, run and type regedit. Locate the key HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{4D36E965-E325-11CE-BFC1-08002BE10318}.
Locate the values on the right for UpperFilters, and/or LowerFilters. Remove these values, then reboot your computer. Be careful here, there are very few second chances when it comes to the registry.

Second method

1. Download these registry files. Unzip them, and then double click to merge. They will remove the offending entries. Then, reboot your computer for the changes to take effect.

Windows 2000- Download Me (http://adrynalyne.colemanguy.com/registry/win2k/2kcd.zip)
Windows XP- Download Me (http://adrynalyne.colemanguy.com/registry/winxp/xpcd.zip)
Windows Vista- Download Me (http://adrynalyne.colemanguy.com/registry/winxp/xpcd.zip)