cd-rom and dvd-rom code 41

Downloaded program called INSEKTOR which didn't work but
did mess up WindowsXP recognizing of both the cd-rom and
dvd-rom drives.INSEKTOR was supposed to play copied games
which had read protection. I wanted to make a copy and
store the original(Medieval Total War)in a safe place.
Code 41 says "windows successfully loaded the device
driver for this hardware but cannot find the hardware
device[code 41]"
Device manager has yellow exclamation points on the two
cd-rom drives.
"My Computer" does not show the two drives.

Any way to reactivate the two cd,dvd-rom drives short of
re-installing everything?
Any help will be greatly appreciated.

Thanks