Thanks to all -- unfortunately the OS is not installed on a computer, but I appreciate all the suggestions for recovering the key on an existing installation. Learned, while attempting to contact Microsoft on their website, how thoroughly they have managed to isolate themselves from their users while making most information available; too bad that to contact them by email you have to have the product key! Catch-22. Anyway, mad attempts to turn the place upside down have at last yielded the missing booklet & key. So we are back in business! Once again, thanks to all and I am glad I didn't have to try to deal with Microsoft any further, assuming that that was even possible -- if only their software were as impregnable!
Thanks again,
Reid