Thank you Nikhil. So I should proceed with instmsiw , not setup? I guess the setup program is for after the install? (Pardon my ignorance, please.)
Regarding the "upper and lower filters" I would like to do this in either event if it might fix the CD drive. I have a question about the registry instructions. If I am able to delete the "upper filters'" entry should I also delete the lower filters? Or do I look for the lower filters only if the upper filters are not present? I'm nervous about editing the registry. Is it reversable if I make a mistake? Thank you! --Sheila