"Required file YI561403" message when trying to upgrade MS Office 2003 demo software to paid product

I get the same message when I tried to convert my Office 2003 "free" demo provided on a new Sony laptop to a paid product. MICROSOFT TOOK MY MONEY, THEN I CAN'T FINISH THE INSTALLATION SO THEIR PROCESS OF CONVERTING DEMO SOFTWARE DOES NOT WORK. Since I have a laptop without any product discs, I have no CD with the missing file YI561403, and MS has not responded in two days to a message I left on their support website for upgrades. Don't EVER do this with microsoft. Now I have to spend time to find a way to reverse the charge on my credit card because not one MS support site has any mention of this "required" file.
Vance Jochim



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