Sorry if this is a little late.
Could this be the "upper/lower" problem?
Jerry -- you posted earlier at http://forums.driverguide.com/showthread.php?t=30011
that referenced MS Support Article ID: 314060 - "Your CD drive or DVD drive is missing or is not recognized by Windows or other programs"
(They tell me your memory is the second thing to go and I can't remember what the first one is.)
Hope this helps.