Predator, thanks for your time and suggestions.  I consulted your link before and here is what I did so far:  uninstalled both, device and IDE Controller:  did not work.  Removed Multimedia (can not switch it back on, since the device does not read CD Rom), disabled Sonic DLA: it did not help.  Now iTunes is giving me message that some of its components are missing and should be reinstalled.  I am wondering if there is a compatibility issue with iTunes, since I had glitches with it from the beginning...  Or am I off the track here?  Being clueless, further suggestions would be appreciated.  Thanks.