How to scan in Microsoft Word with OCR format support?
You can't scan in Microsoft Word and have the OCR function as well, because Microsoft removed it. The only way you can perform OCR is with the help of another application. I recommend checking the following applications listed as compatible and available for the OCR procedure.
Search results: http://software.informer.com/search/ocr
Personally, I have used ABBYY FineReader as an OCR application.