Hi, since I wrote my question, I did the uninstall of my cd-rom and
restarted the computer and got the following message:"the installation of
your device could not be completed. The installation of ATAPI DVD DH16W1P ATA
device failed. If you know thmanufaturer, contact them with help of
installing this device." then I went back to 'device manager' and there are
both my drives listed, the internal one above and my external one as well. So
I went back to the little window where you can try and upgrade or reslove
this problem and that's when the error 39 message showed up again. I have
been to the first 2 web links you sent, will try the 3rd one now. I have
found another site that might help, I am trying it now, and that is to enter
the 'value' for each driver, 1 for CD-R,2 for CD-RW, or 3 for standard CD-Rom
that is not writable, do you know about this
http://support.microsoft.com/kb/316529/EN-US
Eleonore